Test the claim that the mean GPA of night students is smaller than 2.2 at the 0.025 significance level.The null and alternative hypothesis would be:Ho: 2.2 Ho:p ≤ 0.55 Ho:p≥ 0.55 Ho:p = 0.55 Ho:μ = 2.2 Ho:μ ≤ 2.2H₁: <2.2 H₁:p> 0.55 H₁:p < 0.55 H₁:p 0.55 H₁:μ ‡ 2.2 H₁: > 2.2The test is:two-tailed left-tailed right-tailedBased on a sample of 35 people, the sample mean GPA was 2.15 with a standard deviation of 0.04The p-value is:Based on this we:O Fail to reject the null hypothesisO Reject the null hypothesis(to 2 decimals)

Answered: Test the claim that the mean GPA of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Consider the data. х, | 2 6 13 20 9 17 10 27 24 (a) What is the value of the standard error of the estimate? (Round your answer to three decimal places.) (b) Test for a significant relationship by using the t test. Use a = 0.05. State the null and alternative hypotheses. O Ho: B, + 0 H: B, = 0 O Ho: B, 2 0 H: B, < 0 O Ho: B, = 0 H: B + 0 O Ho: Bo = 0 H: Bo + 0 O Ho: Bo + 0 H: B, = 0 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = State your conclusion. O Reject H. We cannot conclude that the relationship between x and y is significant. O Do not reject Hn. We conclude that the relationship between x and y is significant. O Reject H. We conclude that the relationship between x and y is significant. O Do not reject H.. We cannot conclude that the relationship between x and y is significant.
The following hypothesis test is to be conducted. Ho: Median ≤ 190 H₂: Median > 190 A sample of 30 provided 22 observations greater than 190, 3 observations equal to 190, and 5 observations less than 190. Use α = 0.01. Find the value of the test statistic. (Round your answer to two decimal places.) z = 2.56 X Find the p-value. (Round your answer to four decimal places.) p-value = 0.0052 X What is your conclusion? Reject Ho. The population median is less than or equal to 190. Do not reject Ho. The population median is less than or equal to 190. Reject Ho. The population median is greater than 190. Do not reject Ho. The population median is greater than 190.
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is the proportion of infant colic differs among mothers who smoke and mothers who do not smoke. Show all 5 steps of the hypothesis test. α=0.05.
Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Ho: p = 0.8 versus H₁: p > 0.8 n = 125; x = 105; α = 0.1 Click here to view page 1 of the table. Click here to view page 2 of the table. Calculate the test statistic, Zo. Zo (Round to two decimal places as needed.) Identify the P-value. = P-value = (Round to three decimal places as needed.) Choose the correct result of the hypothesis test for the P-value approach below. A. Do not reject the null hypothesis, because the P-value is less than a. B. Do not reject the null hypothesis, because the P-value is greater than α. C. Reject the null hypothesis, because the P-value is greater than a. O D. Reject the null hypothesis, because the P-value is less than α.
Test the claim that the mean GPA of night students is smaller than the mean GPA of day students at the 0.10 significance level.The null and alternative hypothesis would be: H0:μN≥μDH0:μN≥μDHa:μN<μDHa:μN<μD H0:pN≥pDH0:pN≥pDHa:pN<pDHa:pN<pD H0:pN≤pDH0:pN≤pDHa:pN>pDHa:pN>pD H0:μN≤μDH0:μN≤μDHa:μN>μDHa:μN>μD H0:μN=μDH0:μN=μDHa:μN≠μDHa:μN≠μD H0:pN=pDH0:pN=pDHa:pN≠pDHa:pN≠pD The test is: left-tailed right-tailed two-tailed The sample consisted of 16 night students, with a sample mean GPA of 2.33 and a standard deviation of 0.03, and 22 day students, with a sample mean GPA of 2.34 and a standard deviation of 0.02. test statistic = [three decimal accuracy] p-value = [three decimal accuracy] Based on this we: Reject the null hypothesis Fail to reject the null hypothesis
(c) Write a conclusion for this hypothesis test assuming an a= 0.05 level of significance. OA. Reject the null hypothesis. There is not sufficient evidence to conclude that the mean height of women 20 years of age or older is greater today. OB. Reject the null hypothesis. There is sufficient evidence to conclude that the mean height of women 20 years of age or older is greater today. C. Do not reject the null hypothesis. There is not sufficient evidence to conclude that the mean height of women 20 years of age or older is greater today. OD. Do not reject the null hypothesis. There is sufficient evidence to conclude that the mean height of women 20 years of age or older is greater today.
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Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. H0: p=0.9 versus H1: p>0.9 n=200; x=190; α= 0.05 Calculate the test statistic, z0.
A null and alternative hypothesis are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. H0: μ = 5.2 Ha: μ ≠ 5.2 Question content area bottom Part 1 What type of test is being conducted in this problem? A. Right-tailed test B. Two-tailed test C. Left-tailed test

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