For each of the following, enter the number for the test you would use 1 one sample t-test 2 two sample t-test 3 paired t-test 4 one proportion z-test 5 two proportion z-test 6 goodness of fit test 7 test of independence 8 test of homogeneity 9 none of the above   A thousand second year medical school students were surveyed about sleep patterns.  They were asked if they slept more than 6 hours per night as undergraduates and if they currently sleep more than 6 hours per night.  You would like to test if sleep patterns have changed (i.e., the percentages are different).

Q: For a sample with s = 9, a score of X 67 corresponds to z =+1.00. What is the sample mean? %3D O M=…

A: Solution

Q: The following data represent the responses (Y for yes and N for no) from a sample of 20 college…

A: From the provided information, Sample size (n) = 20 Number of college students who responded “yes” =…

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Q: I need the solution

A: (a) The proportion of cups filled with soft drink from the beverage fountain is, Thus, the…

Q: d.) Identify the probability of each sample. e.) Find the population mean. f.) Compare the…

A: Given: Population size, N=3 Sample size, n=3 Population is - 2,4,5

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A: 24) Given: n=200p=0.18

Q: The following data represent the responses (Y for yes and N for no) from a sample of 20 college…

A: The standard error of the proportion is the standard deviation of the sample proportions. The higher…

Q: n choose the appropriate test and name the​ population(s). A researcher asks a random sample of 200…

A: When the variable of interest is categorical in nature, it indicates that we are dealing with the…

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A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: Here, n is…

Q: Which of the following statements are true? I. The mean of a population is denoted by X. II. The…

A: Information about population mean and sample mean.  Sample mean =x̄ Population mean μ

Q: The Fish and Game Department stocked a lake with fish in the following proportions: 30% catfish, 15%…

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Q: To determine how American college students feel about commuting, 100 students at a private…

A: In order to determine how the students, feel about commuting, 100 students at a private university…

Q: In this problem, assume that the distribution of differences is approximately normal. Note: For…

A: As per our policy, we answer only three sub parts at a time. So, kindly send another request for the…

Q: A: 12.7 13.4 12.6 12.1 11.6 11.1 14.2 15.1 B: 9.8 14.5 10.7 14.2 13.2 12.9 10.9 10.0 12.5 12.3 13.1…

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Q: In this problem, assume that the distribution of differences is approximately normal. Note: For…

A: A B Difference = A–B 12.5 9.6 2.9 13.2 14.3 -1.1 12.6 10.7 1.9 12.1…

Q: In this problem, assume that the distribution of differences is approximately normal. Note: For…

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

Q: Which of the following test statistics may be used to test a value of the population proportion?…

A: Where the variances are known and the sample size is high, a z-test is used to decide if two…

Q: In this problem, assume that the distribution of differences is approximately normal. Note: For…

A: Given: A: {12.7, 13.2, 12.6, 12.1, 11.4, 11.1, 14.2, 15.1,12.5, 12.3, 13.1, 15.8, 10.3, 12.7, 11.1,…

Q: For each of the following research situations, identify the level of measurement of all variables.…

A: a. Level of measurement is nominal. The statistical application used here is descriptive statistics…

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A: Here we want to know situations would a sample be used versus a population.

Q: How hard is it to reach a businessperson by phone? Let p be the proportion of calls to…

A: Solution: 4. a. From the given information, confidence level is 0.80 and E=0.03.

Q: Q1 Which of the following are assumptions that must be met when performing an independent samples…

A: We have to choose the assumptions that must be met when performing an independent samples test.

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A: Note: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have…

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A: Paired t-test can be defined as a statistical technique that can be used to decide whether the mean…

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A: From the provided information,

Q: 9. A state-by-state survey found that the proportions of adults who are smokers in state A and state…

A: Since we only answer up to 3 sub-parts, I'll answer the 1st 3 sub-parts. Please resubmit the…

Q: Which of the following are assumptions for testing a single population proportion? (Select all that…

A: We have to choose the assumptions for testing a single population proportion.

Q: In this problem, assume that the distribution of differences is approximately normal. Note: For…

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Q: Let p = 0.15 be the proportion of smart phone owners who have a given app in a particular market.…

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A: (a) Here the researcher knows the opinion of the students for change in parking policy. The options…

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A: GivenA)The total number of people in sample =25The number of people with winning tickets in sample…

Q: Find each of the following. 7. A pack of Skittles contained a total of 75 pieces of which 15 were…

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Q: Which of the following is the value of ?0.05 with a sample size of 10?     a. 1.812 b. 1.900 c.…

A: Given that,  alpha=0.05 Sample size n=10

Q: Which of the following is TRUE about the mean of the sampling distribution of the sample means? It…

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Q: For the sampling distribution of sample proportions, if np>5 and nq>5 then the mean of the…

A: From the provided information, For sampling distribution of sample proportions np > 5 and nq >…

Q: Which of the following statements is correct? a. The mean of the sampling distribution of the means…

A: The means of the samples drawn from a population are always equal to the population mean .…

Q: ccording to a recent​ census, 15​% of the people in the United States are of Hispanic origin. One…

A: Given: Sample size (n) = 435. Population proportion (p) = 0.15

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A: Here it is given that a consumer group wanted to determine if there was a difference in customer…

Q: In each situation, find the value of the standardized statistic for the sample mean, and indicate…

A: Givena)x = 195μ=190s=21n=4

Q: The following data represent the responses​ (Y for yes and N for​ no) from a sample of 20 college…

A: Given information- We have given the data that represents the response yes and no. Sample size, n =…

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Q: For a sample with s = 20, a score of X = 82 corresponds to z = +00. What is the sample mean? OM = 61…

A: Givenstandard deviation(s)=20X=82z-score=0

Q: In this problem, assume that the distribution of differences is approximately normal. Note: For…

A: The null and alternative hypothesis is, H0:μA-μB=0Ha:μA-μB≠0 From the given information, we have…

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Q: "A manufacturer of shampoo claims that 72% of the shampoo users prefer brand X. To test this claim,…

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Q: Use the following scenario to answer the next 6 questions: M&Ms are your favorite vending machine…

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.