a. A random sample of 180 students from a private kindergarten produces mean weight of 46.3kg with sample standard.deviation 4.7. Construct a 95% confidence interval for the mean weights of all students at the kindergarten. b. A random sample of older people were asked "Would you like to turn back to younger years if you were given the opportunity for a second time? Of the 250 people surveyed, 195 of them said that they would do so. Find the value of p-hat and q-hat. Answer up to 2 decimal places. Show your works.

Q: (b) A sample of size 15 drawn from a normally distributed population has sample mean 35 and sample…

A:

Q: A guidance counselor wishes to determine if the proportion of high school girls in his school…

A: Given data:   16-year-olds 17-year-olds 18-year-olds Row totals Work 45 31 38 114 Don't work…

Q: is the relations

A: Variables in the sample and population Sample: The process of selecting a sample from a population…

Q: 1. The table below shows the weights (kg) of the students in an ESM 2035 class. a. Calculate the…

A: Given information: Table showing weights and frequency of students Weights Frequency 40-49 3…

Q: var 3X+2)-432 a) Find a and 9 If the random variable X has Gamma (@) .such that E(X-2)-10 and 5)…

A: We are given the following information as follows   X ~ Gamma (α,θ) and E(X-2)=10; and Var(3X+2)=432…

Q: Venn Diagrams: Example 7 4 2 1 5 3 B ➤Find AB, BC, ANC, B'NA, AΜBNC, (AUB) NC'? S

A:

Q: A random variable x following binomial distribution with p = 0.32 and n = 25. Find i) Mean and ii)…

A:

Q: (b) Compute d.   c) Compute the standard deviation  sd. (Round your answer to two decimal places.)…

A: From given data we have: n=7 Element  Pop 2 Pop 2 1 11 8 2 7 8 3 9 6 4 12 7 5 13 10 6…

Q: Data was collected for 300 fish from the North Atlantic. The length of the fish (in mm) is…

A: Introduction Data are placed into simpler sections, which have been generally alluded to as sets or…

Q: The TSA randomly swabs carryon bags to test for traces of explosives. After swabbing the luggage…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: For a data set of the pulse rates for a sample of adult​ females, the lowest pulse rate is 36 beats…

A: We have given that Mean (x̅) = 78Standard deviations (s) = 22.6

Q: 3. The following data is to be used to construct a regression model: 10 9 4 y S4 8 9 9 9 3 3 The…

A:

Q: 6. In Table 3, calculate the overall number of expected deaths for Population A and for Population…

A: Given Table 1             Population A           Population B Age (Yrs) # people % of pop. #…

Q: 2. How many different four-digit numbers can be formed from the digits 1,2,3,4,5,6,7 such tha the…

A: Answer : 2- Given the digits 1, 2, 3, 4, 5, 6, 7                    How many 4 digits number can be…

Q: In this problem, we explore the effect on the standard deviation of adding the same constant to each…

A: Introduction The magnitude of data displacement in reference to the average is measured by the…

Q: (b) Compute d. (c) Compute the standard deviation s. (Round your answer to two decimal places.) (d)…

A: Given data: Element Population 1 Population 2 1 11 6 2 7 6 3 9 4 4 12 5 5 13 8 6 15…

Q: 3. The following table shows the number of days it takes a researcher to write a report after…

A: (a) The objective is to construct a box and whisker plot for the data:

Q: The following are correctly stated hypotheses except ______

A: There are two hypothesis, one is null hypothesis and other is alternative hypothesis.

Q: Scores in the first and fourth (final) rounds for a sample of 20 golfers who competed in PGA…

A:

Q: The probability that data are entered incorrectly into a field in a database is 0.005. A data entry…

A: Hint:  Uniform distribution has equal probability all over the given interval. Obtain the…

Q: 6. There are four QA inspectors in a packaging factory. Each one is supposed to stamp the date of…

A: Given data Event  E : dates was not stamped A: James stamps date P(A) = 0.20   P(E|A) = 1/200 =…

Q: Identify the number of individuals included in the summary.

A: We have to determine the total number of individuals given in frequency distribition.

Q: At one point the average price of regular unleaded gasoline was ​$3.75 per gallon. Assume that the…

A: a) Suppose a random variable X defines the price of regular unleaded gasoline.

Q: To test for any significant difference in the number of hours between breakdowns for four machines,…

A:

Q: Below are amounts (in millions of dollars) collected from parking meters by a security service…

A: Security service company: Let us calculate mean  N=10 x=mean/n…

Q: ble           correct count incorrect count row total       Version A 405

A: The hypothesis testing for difference between proportions of two populations 1 p1 σp1 2 p2 σp2…

Q: If P(A) = 0.30, P(B) = 0.20, P(A and B) = 0.09, what can be said about events A and B? Events A & B…

A: It is given that, P(A) = 0.30, P(B) = 0.20 and P(A and B) = 0.09.

Q: Find the first and third quartile for the data shown X 2.5 2.7 14.1 15.3 17.1 18.7 18.8 25 27.9 28.1…

A: The objective is to find the first and third quartile for the given data.

Q: w to get the number of class, class interval, and class limits. For quantitative data, get frequency…

A: Time per week on meetings 1 21 2 23 3 14 4 15 5 19 6 18 7 15 8 15 9 23 10 18…

Q: Define descriptive and inferential statistics. Focus on the difference between the two types of…

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

Q: For each of the following dependent variables indicate: O whether the measurement scale is discrete…

A:

Q: Q6. Consider a population consisting of 1,2,3,4 and 5. Supposed samples of size 2 are drawn from…

A: Given that Population: 1,2,3,4,5 Sample size: 2 We have to find b..List down all the possible…

Q: atty is interested in designing a study to test whether or not chocolate can reduce people's level…

A: Given data: Participant No Chocolate Chocolate 1 43 39 2 29 30 3 15…

Q: Here are the winning margins for the men's NCAA basketball championship games from 1979-2019 (for…

A: The question is about frequency distribution Given :   To find : To construct frequency table

Q: 1. A city has 9 coffee shops: 3 Starbuck's, 2 Caribou Coffees, and 4 Crazy Mocho Coffees. If a…

A: Hint: The addition rule for any two mutually exclusive events X and Y states that the probability…

Q: Three students are selected randomly from a group of 3 males and 7 females. Find the  probability…

A: Introduction: A group consists of 3 males and 7 females, that is, 3 + 7 = 10 students.

Q: Suppose it is know that the standard deviation of the amount customers spend is $8.8 Also suppose…

A:

Q: weatherwise is a magazine published by the American Meteorological Society. One issue gives a rating…

A: Suppose μ is the population average peak wave height of a severe storm.

Q: pls answer b with some explanation tq

A: Anova explain the mean significance between the three or more groups. It use F test to make…

Q: The lifetime of a semiconductor laser has a lognormal distribution, and it is known that the mean…

A: Given that We have to find  a..Parameters of log normal distribution b.. Probability that a…

Q: The increasing annual cost (including tuition, room, board, books, and fees) to attend college has…

A: The data shows the annual cost to attending private and public colleges.

Q: 9. What is the probability that a randomly selected person is a Male or in favor of the statement?…

A: P(male and in favor) = 108/500= 0.216

Q: In the transmission of digital information, the probability that a bit has high, moderate, and low…

A: Given that Probability (High)=0.01 Probability (Moderate)=0.04 Probability (low)=0.95 X: The number…

Q: The following are the GPAs of 12 randomly selected SCC students: 2.1, 2.2, 2.2, 2.3, 2.5, 2.6, 2.6,…

A: Given The data is as follows: 2.1, 2.2, 2.2, 2.3, 2.5, 2.6, 2.6, 2.8, 3.1, 3.3, 3.4, 3.9

Q: In a semiconductor manufacturing process, three wafers from a lot are tested. Each wafer is…

A: given data  P(passes test)  = p = 0.6 n = 3 wafers selected x = no. of wafers passes test P(x=X) =…

Q: The random variable X has probability distribution as shown in the table. X P(X) 1 0.3 2 Obtain: ii.…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Twenty years ago, a very famous psychologist specializing in marriage counseling authored a book…

A: Introduction In the given scenario, a highly well-known marriage counselor who wrote a book about…

Q: Suppose that a recent article stated that the mean time spent in jail by a first–time convicted…

A: Here is given that mean time is 3.5 and sample is 45. Sample mean is 3 and sample variance is 1.4.…

Q: Suppose that X has a Weibull distribution with ß = 0.3 and 5 = 100 hours. Determine the following.…

A: The question is about Weibull distribution Given : X ~ Weibull ( β, δ ) Where, β = 0.3 δ = 100 hours…

Q: One of the steps involved with buying a home is a home inspection. We cannot be sure how much time…

A: Given information: X=time to inspect a house in minutes. X follows uniform distribution between 30…