Let's say I am studying the difference in blood glucose levels in two treatments, treatment A and treatment B. I elect to use an unpooled t-test and my results say that I reject HO. What is my conclusion about the blood glucose levels in the different treatments? O The blood glucose levels in Treatment A and Treatment B are not the same O We need to calculate a p value before we can tell O Treatment A has higher blood glucose levels than Treatment B O Treatment A and Treatment B have similar blood glucose levels
Q: A psychologist is studying the self image of smokers, as measured by the self-image (SI) score from…
A: The objective of the question is to understand the concepts of null hypothesis, alternative…
Q: Question-A reliability demonstration experiment is required to show 98% reliability with 95%…
A: now by rounding off the answer will be 150
Q: The following are the ages of 11 physics teachers in a school district. 37, 41, 44, 44, 46, 47, 48,…
A: The objective of this question is to find the five-number summary and the interquartile range for…
Q: If the scores on a test have a mean of 43 and standard deviation of 1.5, what is z score of 45?
A: In order to solve for the equivalent z score, we will use the z score formulaFormula:z =…
Q: If all the possible random samples with n = 81 scores are selected from a normal population with µ =…
A: The objective of the question is to find the average of all the sample means when all possible…
Q: Random samples of size n are taken from a normal population whose standard deviation is known to be…
A: Step 1:a) Given, n=10, σ = 5 (Population standard deviation.), x̄ is the sample mean, μ is the the…
Q: The sample mean is x ~ 93.3. Let x be a random variable representing glucose readings taken from…
A:
Q: 1. Construct a frequency table for the data, including both the number and percentage in each…
A: The distribution is bell-shaped, with majority of the data falling between 470K and 569K. The…
Q: Hanny .1
A: Sure! The Stanford-Binet Intelligence Test is a widely used intelligence test that is administered…
Q: please answer in text form and in proper format answer with must explanation , calculation for each…
A: 1. Identifying Mean Percent Mortality for Each Concentration: By averaging the % mortalities derived…
Q: ||| ○ Probability Finding probabilities of events and complements 1/3 Takaila Greg is a quality…
A: The objective of this question is to find the probabilities of two events: A, the part Greg chooses…
Q: Debra is a stats keeper for the local youth soccer league. At the end of the season, she calculated…
A: The objective of the question is to identify the population and the sample in the given scenario and…
Q: Question 7 of 10 This test: 12 point(s) possible This question: 1 point(s) possible Submit test does…
A: The objective of this question is to find the mean, median, and mode of the cholesterol levels of a…
Q: Express the confidence interval 0.7770.777less than<pless than<0.9990.999 in the form…
A: Step 1:Given data :The Confidence Interval in the Inequality form is : 0.777<p<0.999 Step…
Q: In a survey of 163 subjects, each was asked to indicate how many text messages they send and receive…
A: problem is solved { if it helps please leave positive rating it's matter alot to us Thank you…
Q: 15. Match each experiment design to its description. Answer Description Correlation matrix…
A: The objective of this question is to match each experiment design to its corresponding description.
Q: In a completely randomized design, 12 experimental units were used for the first treatment, 15 for…
A: Step 1:Given thatFirst treatment (n1)=12 Second treatment (n2)=15 third treatment (n3)=20And…
Q: A professional golfer is shopping for a new brand of golf ball. She likes most of the features of…
A: The objective of this question is to find the proportion of spin rates in the sample that are…
Q: Use the Seaport data set below, a = 0.2, and ẞ = 0.4 to calculate the adjusted exponential smoothing…
A:
Q: A catering service offers 6 appetizers, 9 main courses, and 5 desserts. A banquet committee is to…
A: The objective of this question is to find out the total number of ways the banquet committee can…
Q: please answer in text form and in proper format answer with must explanation , calculation for each…
A: Step 1:Given data : Sample size n=200no. of successes x=52Here success implies a user developed…
Q: Evaluate the definite integral below. 3 Enter your answer in exact form or rounded to two decimal…
A: Step 1: Step 2: Step 3: Step 4:
Q: The Chef Operating Officer at Best Buy looks at business performance. It randomly selects 15 stores…
A: Systematic sampling is a reliable sampling method. It is a probability sampling method in which a…
Q: S A B Hardness 10 10 875 896 921 686 642 613 10 25 712 719 698 621 632 645 10 50 568 546 559 757 723…
A: Sure, let's break it down step by step.In a factorial experiment like this, where you have two…
Q: Page 471 4. Prison Time According to a public service website, 69.4% of white collar criminals get…
A: Step 1: Suppose p is the population proportion of white-collar criminals serving prison time.The…
Q: please give me answer in relatable
A: Calculate the mean (x̄) x̄ = Sum of all data/ Number of datax̄ = 9352+351+361+.......+359x̄ = 356…
Q: 9.2 & 9.3 Homework i Saved 5%253A%252F%252Fconnect.mh... Help Save & Exit Submit Check my work…
A: To find the degrees of freedom for the interaction, multiply the degrees of freedom for the 1st…
Q: In what way is the second plot more (or less) useful in describing the relationship between the…
A: The regression line in the second plot helps to quantify the relationship between the variables by…
Q: handwritten answers please. please show steps and explain the process
A: Step 1:As we know the sum of all probability will be equal to 1Part…
Q: A certain test is designed to measure the satisfaction of an individual with his/her relationship.…
A: The objective of this question is to find the proportion of people who are dissatisfied with their…
Q: Is there a quick way to solve these kinds of problems with a TI-84? I spend a lot of time doing them…
A: To test if the mean social marginality scores differ across the four age groups, a one-way ANOVA…
Q: The following table represents sales of a particular brand of shirts at a store fe Time left o…
A: Approach to solving the question:Contingency tables are a great way to classify outcomes and…
Q: Weatherwise is a magazine published by the American Meteorological Society. One issue gives a rating…
A: The analysis compares the average peak wave height during a Nor'easter storm, with a severe storm…
Q: handwritten answers. explain your process and steps by step solution. thank you very much
A: Part A: Since the packet is sent N times, the number of trails is n=Np=The probability of receiving…
Q: Find the mode foe the given sample. 4.9 5.1 5.1 4.0 5.4 4.9 5.1 6.5 6.3 4.0 4.9 6.5 4.0 6.5
A: The objective of this question is to find the mode of the given sample. The mode is the value that…
Q: Page 490 16. Self-Esteem Scores In a study of a group of women science majors who remained in their…
A: Step 1: From the provided information,Level of significance (α)=0.05The hypotheses for this test can…
Q: If appropriate, determine the proper conclusion at the 0.05 significance level. Choose the correct…
A: To properly explain the answer OA, let's break down the components involved: the null hypothesis…
Q: The following data was collected to explore how the average number of hours a student studies per…
A: The objective of this question is to determine if a statistically significant linear relationship…
Q: Out of 300 people sampled, 117 had kids. Based on this, construct a 99% confidence interval for the…
A: To find the answer using GeoGebra, we need to do the following steps:1. Set the confidence level =…
Q: The scatter plot shows the number of hours worked and money spent on entertainment by each of 24…
A: Step 1: Define what the correlation coefficient (R) representsThe correlation coefficient (R)…
Q: Trichotillomania is a psychiatric illness that causes its victims to have an irresistible compulsion…
A: Trichotillomania Impairment Scores(a) Sample Standard DeviationWe can't find the exact sample…
Q: None
A: a.To determine the fraction of darts that should land in the quarter circle, we first need to…
Q: As I went to pay for my coffee, I saw a sign saying, “Win free coffee for a year! Choose 4 different…
A: The objective of this question is to find out the total number of different 4-digit passcodes that…
Q: please answer in text form and in proper format answer with must explanation , calculation for each…
A: For any query with the solution please ask in the comment box.
Q: For this problem, carry at least four digits after the decimal in your calculations. Answers may…
A: The objective of this question is to find the point estimate for the proportion of women shoppers…
Q: Typed pllz and asap
A:
Q: The method of tree-ring dating gave the following years A.D. for an archaeological excavation site.…
A: The objective of this question is to calculate the sample mean and standard deviation of the given…
Q: A scientist wants to find the average mass of fish living in a large pond. So she will use the…
A: The objective of the question is to identify the appropriate units of measurement for the mass of…
Q: The data show the chest size and weight of several bears. Find the regression equation, letting…
A: Step 1: Using Excel: Regression equation: Predicted y = 12.471x - 307.98 After rounding to one…
Q: Four distributions, labeled (a), (b), (c), and (d) are represented below by their histograms. Each…
A: A histogram is a visual representation of data that displays the frequency distribution of values…
Step by step
Solved in 2 steps
- i asked this question but it was wrong. The answer they gave was z=2.411 and p value = .102 In a survey of families in which both parents work, one of the questions asked was, "Have you refused a job, promotion, or transfer because it would mean less time with your family?" A total of 200 men and 200 women were asked this question. "Yes" was the response given by 27% of the men and 22% of the women. Based on this survey, can we conclude that there is a difference in the proportion of men and women responding "yes" at the 0.05 level of significance? (Use Men − Women.) (a) Find z. (Round your answer to two decimal places.) Find the p-value. (Round your answer to four decimal places.) (b) State the appropriate conclusion. Fail to reject the null hypothesis. There is not significant evidence that the proportions differ.Reject the null hypothesis. There is significant evidence that the proportions differ. Fail to reject the null hypothesis. There is significant evidence that the…Here's a new idea for treating advanced melanoma, the most serious kind of skin cancer: genetically engineer white blood cells to better recognize and destroy cancer cells, then infuse these cells into patients. The subjects in a small initial study were 11 patients whose melanoma had not responded to existing treatments One outcome of this experiment is measured by a test for the presence of cells that trigger an immune response in the body and so may help fight cancer. Here are data for the 11 subjects: counts of active cells per 100,000 cells before and after infusion of the modified cells. The difference (after minus before) is the response variable. Before 17 1 4 4 22 4 1 After 41 11 2 218 22 700 17 532 37 96 108 Difference 24 10 217 18 699 13 510 33 89 107 (a) Explain why this is a matched pairs design. There were an even number of subjects. All of the subjects were related. O Half of the subjects took a placebo. O Each subject was measured before and after treatment. The…A pharmaceutical company wants to test whether their the incidence of side effects (i.e. adverse events) differs between the treatment and placebo groups at the a = 0.05. Let pı = the proportion of subjects in the treatment groups who experienced at least one adverse event and let p2 = the proportion of subjects in the placebo group who experience at least one adverse event. 8 out of 30 people in the treatment group experienced at least one adverse event and 5 out of 30 people in the placebo group experienced at least one adverse event. (a) Set up the null and alternative hypothesis (using mathematical notation/numbers AND interpret them in context of the problem) (b) Calculate the test statistic (c) Calculate the critical value (d) Draw a picture of the distribution of the test statistic under Ho. Label and provide values for the critical value and the test statistic, and shade the critical region. (e) Make and justify a statistical decision at the a = 0.05 level and state your…
- A medical student at a community college in city Q wants to study the factors affecting the systolic blood pressure of a person (Y) Generally, the systolic blood pressure depends on the BMI of a person (B) and the age of the person A. She wants to test whether or not the BMI has a significant effect on the systolic blood pressure, keeping the age of the person constant. For her study, she collects a random sample of 125 patients from the city and estimates the following regression function: Y= 15.50 + 0..90B+1.15A. (0.55) (0 40) The test statistic of the study the student wants to conduct (Ho: B, = 0 vs. H, B, #0), keeping other variables constant is. (Round your answer to two decimal places.) At the 5% significance level, the student will ▼ the null hypothesis. Keeping BMIl constant, she now wants to test whether the age of a person (A) has no significant effect or a positive effect on the person's systolic blood pressure. So, the test statistic associated with the one-sided test the…Two types of medical devices used for knee replacement are being studied to see if the type of knee replacement used affects the rate of infection for a specific bacterial infection. The infection rate for a specific bacterial infection after surgery for device A is 0.0043. The rate for the same bacterial infection is 0.0121 for device B. How does the risk of developing the bacterial infection in individuals using device B compare to the risk of developing the bacterial infection in individuals using device A? Individuals using device A are 2.814 times more likely to develop the bacterial infection of interest than individuals using device B. Individuals using device B are 2.814 times more likely to develop the bacterial infection of interest than individuals using device A. Individuals using device A are 1.35 times more likely to develop the bacterial infection of interest than individuals using device B. Individual using device B are 1.35 times…A researcher wanted to study the relationship between coffee drinking and heart problems. She interviewed all patients at several area hospitals and found that patients in the hospital for treatment of heart problems drank an average of 2.7 cups of coffee per day (Margin of error is 1.4 cups) while those patients being treated for other problems averaged only 1.4 cups of coffee per day (Margin of error is 0.8 cups). What conclusion can you draw about coffee as a cause of heart problems from this information?A) Coffee is bad for you.B) Coffee is good for you.C) Heart patients drink more coffee than other patients.D) None, because only patients in hospitals were interviewed.
- one hundred adults who had their Type 1 or Type 2 diabetes were selected to determine if the inhalable version of insulin is able to manage blood sugar 'vels just as swell as injected insulin. The adults uses the inhaler for 3 months and then their blood sugar levels were recorded. Then they uses the injection for 3 months and then their blood sugar levels were also recorded. If we want to test if there is a difference in .average blood sugar levels using the two methods ?Which inference procedure should we use [Hint: test statistics ] None of these .A O Confidence interval about the population mean of the secondgroup .B O t-test about the difference between two means for independent samples CO t-test about the mean difference for paired samples .D O Confidence interval about the population mean of the first group .E OA diabetic person is interested in determining how the amount of aerobic exercise impacts his blood sugar. When blood sugar reaches 170 mg/dl, he goes out for a run at a pace of 10 minutes per mile. On different days, he runs different distances and measures his blood sugar after completing his run. The preferred blood sugar level is in the range of 80 to120 mg/dl. Levels that are too low or too high are extremely dangerous. The data generated are given in the following table: Distance (miles),x Blood sugar(mg/dl gram),y 2 136 2 146 2.5 131 2.5 125 3 120 3 116 3.5 104 3.5 95 4 85 4 94 4.5 83 4.5 75 Based on the scenario above, analyse the data with appropriate statistical methods and describe your findings in details. Use alpha=0.05 [note: use hypothesis, test statistics confidence interval etc.] ]Does a high value of r2 imply that two variables are causally related? Explain.
- A researcher evaluated the effectiveness of relaxation training in reducing anxiety. One sample of anxiety ridden people received relaxation training, while a second sample did not. Then anxiety scores were measured for all subjects, using a standardized test. Us the information summarized in the following table to complete this item. The Effect of Relaxation Training on Anxiety Scores Group Mean Anxiety Score SE Control group 36 12 Relaxation training 18 10 What is the DV (remember, the DV is the data)? What is the level of measurement of the DV? What is the best graph to display this data? ExplainWe ask if visual memory ability for a sample of 25 art major (T=49) is better than that of engineers who, on a nationwide test, scored u=45 and ox=14. Higher scores indicate a bettermemory. d. What do you conclude about memory ability from these results?I am unsure of my answers for the histograms and I don't understand the empirical rule. Please explain the empirical rule and confirm my answers for the histogram question of my exercise is correct. Thank you.
