You are interested in investigating the efficacy of a stressor and design an experiment measuring stress levels before and after performing the new stressor. You recruit 12 people to participate in your study and bring the same 12 participants in for two separate sessions. What is the degrees of freedom (N-1) of this data?

Q: The 5-year annual investment returns of MGM Resorts International (MGM) are below: Year Annual…

A: The standard deviation of annual returns can be calculated using the formula given by, SD = √[(Ri –…

Q: It is known that the population mean on the math portion of the SAT is 527, with a standard…

A: Solution: Given information: μ=527   Population mean σ=107 Population standard deviation x= 550…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 5.8 inches,…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: 1.) Please find the following probabilities of A, B, C? A.) ?(? ≤ −1.2)= B.) ?(? ≥ 0.08) = C.)…

A: Given: A.) P(Z ≤ −1.2) B.) P(Z ≥ 0.08)  C.) P(0.23 ≤ Z ≤ 1.40)

Q: where not met in 200 iterations Listed below are paired data consisting of amounts spent on…

A:

Q: If your null and alternative hypothesis are: = 82 Ho:μ H1 :μ < 82 Then the test is: two tailed O…

A: H0 : μ = 82H1 : μ &lt; 82we have to identify type of test.

Q: Class 20-22 23-25 26-28 29-31 32-34 Frequency 3 2 1 3 2 Calculate Quartile-2, Decile-8,…

A: The following information has been provided: Class Frequency 20 - 22 3 23 - 25 2 26 - 28 1…

Q: A candy company claims that 31% of candies are orange. We randomly sample 100 candies. We wish to…

A: It is given that  Population proportion, p = 31% = 0.31 Sample proportion, p^ = 29% = 0.29 Sample…

Q: Question 3 A In a single pump petrol station, it was observed that the inter-arrival times and…

A:

Q: Class 20-22 23-25 26-28 29-31 32-34 Frequency 3 3 2 Calculate Quartile-2, Decile-8, Percentile-20…

A: Given data is Class Frequency 20 - 22 3 23 - 25 2 26 - 28 1 29 - 31 3 32 - 34 2

Q: A developer wants to know if the houses in two different neighborhoods were built at roughly the…

A:

Q: want to explain these tables in detail , And when do we use these tests?

A: The information given in the question is presented in the following table as follows: Two way…

Q: When the F statistic is more than the critical cutoff value, additional follow-up analyses are…

A: When the F statistic is more than the critical cutoff value, additional follow-up analyses are…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: We have given that b) when true population percentage is given p = 36% = 0.36Margin of error (E) =…

Q: Explain to me this table and what it is used for?

A: The objective is to explain the given cross tabulation.

Q: The Red Book is an Australian company that provides valuation information on the wholesale and…

A: Given information:…

Q: QUESTION 19 You are interested in investigating the efficacy of a new pain medication and design an…

A: Test statistic is the statistic that used in hypothesis testing. It used to test whether the…

Q: The results of an independent-samples t test were t(18) = 4.42, p < 0.05. In this example, the…

A: Given:t18,0.05=4.42p&lt;0.05

Q: florist wants to determine if a new additive would extend the life of cut flowers longer than the…

A: The last one would be valid conclusion.

Q: Question 10 {3 decimal places } Find the p-value.

A: P value is the probability value of the data set. It explain the chance that an event is likely to…

Q: frequency Histogram 7: Income (15,26] (26,36) (36,47) (47, 185 Income in 1000 Histogram 9: Number of…

A: A histogram is one of the graphical representations of the data. In the histogram, several bars…

Q: A drug trial had 215 participants. A survey was done to gather information about the participants'…

A: Let A denote anxiety and D denotes drowsiness. The number of participants had anxiety but not…

Q: 16. The sampling situation for calculating the standard error of the estimate, se(pd - Ân), is: one…

A: Given information: The data is given below,     Prescription   Total     Prescribed Not…

Q: According to areport on consumer fraud and identity theft, 22% of all complaints during one year…

A: Type I error occurs with the rejection of the null hypothesis when it is actually true. Type II…

Q: You wish to determine if there is a positive linear correlation between the age of a driver and the…

A:

Q: ilies this year reported spending a mean of M = $90, with s = $21. What statis

A: Question: A newspaper article reported that the typical American family spent an average of $86.79…

Q: Questions 28 through 36 use the following information: Set 1 3 Set 2 8 7 7 4 4 28. Compute the mean…

A: Data given  Set 1: 3,7,4,10,6

Q: Assume that adults were randomly selected for a poll. They were asked if they "favor or oppose using…

A:

Q: Use the following table: Value 14 18 3 12 Frequency 3 3 19 3 Find the weighted mean. Note: Round…

A: Given: Value X Frequency W 14 3 18 3 3 19 12 3 Formula Used: Weighted mean = ∑WiXi∑Wi

Q: X P(x) 1 0.15 6 0.05 8 0.3 10 0.5 Find the mean and standard deviation of this probability…

A: X P(X) X*P(X) X2 *P(X)  1 0.15 0.15 0.15 6 0.05 0.30 1.8 8 0.30 2.4 19.2 10 0.50 5 50…

Q: Number of persons in the household 2 3 4 7 8 10 Freq. 850 1,069 436 278 139 58 19 7 percent 29.65…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: Find the median: 68, 81, 72, 104, 28, 100, 66 Median

A: arrange data in accending order 28,66,68,72,81,100,104 sample size n = 7

Q: Question 1 Suppose that a particular production process fills detergent in boxes of a given sizes.…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: QUESTION 2 t-test compares data from the same people measured at different times. paired-samples…

A: Paired samples t-test: A statistical method is used to assess whether the mean difference between…

Q: The scientific productivity of major world cities was the subject of a recent study. The study…

A: From the provided information, Sample size (n) = 20 Confidence level = 90%

Q: A weight-loss clinic advertised that last month its patients, on average, lost 6 lb. Assuming that…

A: Mean :  It is measure of central tendency which represents average of complete data set. Some values…

Q: A local school district claims that the number of school days missed by its teachers due to illness…

A: Solution: Given information: n=28 Sample size x=∑xn=9328=3.3214  Sample mean…

Q: need a fraction please

A: The original problem is related to a die is rolled two times.

Q: simple random sample of size n=40 is drawn from a population. The sample mean is found to be x=121.6…

A:

Q: Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. For a random…

A: Givenclaim  is that the mean pulse rate of adult males is equal to 69 bpmsample…

Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…

A: given data  n = 16 x¯ = 96.7s = 24.4construct 95 % ci for μ.

Q: A study was conducted to investigate the use of community-based treatment programs among Medicaid…

A: Given Information: Prepaid medical plan: Sample size n1=311 Number of successes x1=13   Traditional…

Q: does question say to bring the sample donw by 1/2 or the mean down by 1/2

A: Given the question want to reduce the margin of error from slightly more than half an hour to…

Q: 9.16 According to the 2016 Majoring in Money report by the government-lending institution Sallie…

A: According to the given information in this question We need to answer three subparts

Q: Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a)…

A: The question is about identifying the distribution Given : Confidence level = 0.99 No. of players (…

Q: • Example 2: Is there reason to believe that a relationship exists between heights of fathers and…

A: Solution: Given information: n= 10 observation  x= Father height  and y = Sun height First we find…

Q: In a random sample of 28 high school students, the linear  correlation coefficient R between the…

A: The question is about correlation Given : Linear correlation coefficient ( r ) = -0.473 Randomly…

Q: Heights for teenage boys and girls were calculated. The mean height for the sample of 47 boys was…

A: Given data isThe height of teenage boys and girls are calculated belowsample of boys(n)= 47The mean…

Q: Use the following table. Truck current cost 2012 Truck base year's cost 2008 Calculate the price…

A: Given: Truck current cost = 46500 Truck base year's cost = 32000 Formula used: Price relative =…

Q: Delivery Service provides high quality service to customers. The company guarantees a refund of all…

A: Express House delivery service Mailing Packages = 10 Packages mailed through this company do not…