Random samples of resting heart rates are taken from two groups. Population 1 exercises regularly, and Population2 does not. The data from these two samples is given below:Population 1: 68, 67, 69, 62, 72, 66, 70Population 2: 70, 73, 77, 72, 70, 70, 77, 71Is there evidence, at an a = 0.035 level of significance, to conclude that there those who exercise regularly havelower resting heart rates? (Assume that the population variances are equal.) Carry out an appropriate hypothesistest, filling in the information requested.A. The value of the standardized test statistic:Note: For the next part, your answer should use interval notation. An answer of the form (-00, a) is expressed (-infty, a), an answer of the form (b, o0) is expressed (b, infty), and an answer of the form (-00, a) U (b, o0) isexpressed (-infty, a)U(b, infty).B. The rejection region for the standardized test statistic:C. The p-value isD. Your decision for the hypothesis test:OA. Do Not Reject H1.OB. Do Not Reiect Ho

Given data : Population 1: 68, 67, 69, 62, 72, 66, 70 Population 2: 70, 73, 77, 72, 70, 70, 77, 71

Answered: Population 1: 68, 67, 69, 62, 72, 66,…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Violation of which assumption below for the two-factor ANVOA is not a cause for concern with large sample sizes? a. The populations from which the samples are selected must have equal variances. b. The populations from which the samples are selected must be normal. c. A violation of any assumption below would be a concern, even with large sample sizes. d. The observations within each sample must be independent.
2
Assuming that other factors are held constant, which approach would tend to increase the likelihood of rejecting the null hypothesis? a. Decrease the sample mean difference. b. Increase the sample variance. c. Increase the sample mean difference. d. Decrease the sample size.
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Big fish: A sample of 250 flounder of a certain species have sample mean weight 50.5 grams. Scientists want to perform a hypothesis test to determine how strong the evidence is that the mean weight is less than 49 grams. State the appropriate null and alternate hypotheses.
1. We want to investigate whether traffic accidents are more likely on certain days of the week on certain road sections. Which of the following tests best fits the situation?Choose one:a. Two-way analysis of variance OR b. Compatibility test OR c. Paired t-test 2. In which of the following can it be assumed that the sample comes from a normal distribution?Choose one:a. In the Runs test (random test)b. In the compatibility testc. In a two-way analysis of variance
What conditions are necessary in order to use a one-way ANOVA test? Which conditions below are necessary? Select all that apply. □ □ □ A. The sample sizes must be equal. B. Each population must have the same variance. C. There must be at least 3 samples. D. The sample must be randomly selected from the same population. E. The samples must be randomly selected from a normal, or approximately normal, population. F. The samples must be independent of each other.
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B. What is the test statistic? z=___ C. What is the P-value? P-value=___ D. What is the null hypothesis, and what do you conclude about it? H0: p≠0.09or H0: p<0.09 or H0: p=0.09 or H0: p >0.09 E. Reject the null hypothesis or Fail to reject the null hypothesis? Why? F. What is the final conclusion?
II wu.aleks.com A Students Home 6McGraw Hill Campus A ALEKS-Anna Bergstr... Untitled O CONFIDENCE INTERVALS AND HYPOTHESIS TESTING Hypothesis test for the population mean: t test using the critical... SAC A Du A coin-operated drink machine was designed to discharge a mean of 6 fluid ounces of coffee per cup. In a test of the machine, the discharge amounts in 22 randomly chosen cups of coffee from the machine were recorded. The sample mean and sample standard deviation were 5.88 fluid ounces and 0.24 fluid ounces, respectively. Españot If we assume that the discharge amounts are approximately normally distributed, is there enough evidence, to conclude that the population mean discharge, u, differs from 6 fluid ounces? Use the 0.10 level of significance. Perform a two-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) (a) State the null hypothesis H and the alternative hypothesis H.…
According to a study conducted by a statistical organization, the proportion of people who are satisfied with the way things are going in their lives is 0.88. Suppose that a random sample of 100 people is obtained. Complete parts (a) through (e) below. (a) Suppose the random sample of 100 people is asked, "Are you satisfied with the way things are going in your life?" Is the response to this question qualitative or quantitative? Explain. A. The response is qualitative because the responses can be classified based on the characteristic of being satisfied or not. B. The response is quantitative because the number of people satisfied can be counted. C. The response is quantitative because the responses can be classified based on the characteristic of being satisfied or not. D. The response is qualitative because the number of people satisfied can be counted. (b) Explain why the sample proportion, p, is a random variable. What is the source…

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