Test the claim that the mean GPA of night students is smaller than the mean GPA of day students at the 0.01 significance level. The null and alternative hypothesis would be: H0:μN=μDH0:μN=μD H1:μN≠μDH1:μN≠μD H0:μN≤μDH0:μN≤μD H1:μN>μDH1:μN>μD H0:pN=pDH0:pN=pD H1:pN≠pDH1:pN≠pD H0:pN≥pDH0:pN≥pD H1:pNpDH1:pN>pD The test is: left-tailed right-tailed two-tailed The sample consisted of 45 night students, with a sample mean GPA of 3.23 and a standard deviation of 0.05, and 45 day students, with a sample mean GPA of 3.26 and a standard deviation of 0.08. The test statistic is: (to 2 decimals) The p-value is: (to 2 decimals) Based on this we:

Test the claim that the mean GPA of night students is smaller than the mean GPA of day students at the 0.01 significance level. The null and alternative hypothesis would be: H0:μN=μDH0:μN=μD H1:μN≠μDH1:μN≠μD H0:μN≤μDH0:μN≤μD H1:μN>μDH1:μN>μD H0:pN=pDH0:pN=pD H1:pN≠pDH1:pN≠pD H0:pN≥pDH0:pN≥pD H1:pNpDH1:pN>pD The test is: left-tailed right-tailed two-tailed The sample consisted of 45 night students, with a sample mean GPA of 3.23 and a standard deviation of 0.05, and 45 day students, with a sample mean GPA of 3.26 and a standard deviation of 0.08. The test statistic is: (to 2 decimals) The p-value is: (to 2 decimals) Based on this we:

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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Test the claim that the proportion of men who own cats is smaller than 70% at the .05 significance level.The null and alternative hypothesis would be: H0:p=0.7H0:p=0.7H1:p≠0.7H1:p≠0.7 H0:p=0.7H0:p=0.7H1:p<0.7H1:p<0.7 H0:μ=0.7H0:μ=0.7H1:μ≠0.7H1:μ≠0.7 H0:p=0.7H0:p=0.7H1:p>0.7H1:p>0.7 H0:μ=0.7H0:μ=0.7H1:μ<0.7H1:μ<0.7 H0:μ=0.7H0:μ=0.7H1:μ>0.7H1:μ>0.7 The test is: two-tailed right-tailed left-tailed Based on a sample of 20 people, 68% owned catsThe test statistic is:  (to 2 decimals)The critical value is:  (to 2 decimals)Based on this we: Fail to reject the null hypothesis Reject the null hypothesis
Test the claim that the proportion of men who own cats is smaller than 70% at the 0.05 significance level.The null and alternative hypothesis would be: H0:p≤0.7H0:p≤0.7H1:p>0.7H1:p>0.7 H0:μ=0.7H0:μ=0.7H1:μ≠0.7H1:μ≠0.7 H0:p=0.7H0:p=0.7H1:p≠0.7H1:p≠0.7 H0:μ≥0.7H0:μ≥0.7H1:μ<0.7H1:μ<0.7 H0:μ≤0.7H0:μ≤0.7H1:μ>0.7H1:μ>0.7 H0:p≥0.7H0:p≥0.7H1:p<0.7H1:p<0.7 The test is: right-tailed two-tailed left-tailed Based on a sample of 800 people, 67% owned catsThe test statistic is:  (to 2 decimals)The critical value is:  (to 2 decimals)Based on this we: Fail to reject the null hypothesis Reject the null hypothesis
Test the claim that the proportion of men who own cats is smaller than 20% at the .10 significance level.The null and alternative hypothesis would be: H0:P=0.2H1:P>0.2 H0:U=0.2H1:U>0.2 H0:U=0.2H1:U≠0.2 H0:P=0.2H1:P<0.2 H0:P=0.2H1:P≠0.2 H0:U=0.2H1:U<0.2 Based on a sample of 45 people, 13% owned catsThe test statistic is  (to 3 decimals)The critical value is  (to 2 decimals)Based on this we Fail to reject the null hypothesis Reject the null hypothesis
Test the claim that the proportion of men who own cats is smaller than 40% at the .10 significance level.The null and alternative hypothesis would be: H0:μ=0.4H0:μ=0.4H1:μ<0.4H1:μ<0.4 H0:μ=0.4H0:μ=0.4H1:μ≠0.4H1:μ≠0.4 H0:p=0.4H0:p=0.4H1:p≠0.4H1:p≠0.4 H0:p=0.4H0:p=0.4H1:p<0.4H1:p<0.4 H0:p=0.4H0:p=0.4H1:p>0.4H1:p>0.4 H0:μ=0.4H0:μ=0.4H1:μ>0.4H1:μ>0.4 The test is: left-tailed two-tailed right-tailed Based on a sample of 75 people, 33% owned catsThe test statistic is: (to 2 decimals)The critical value is: (to 2 decimals)Based on this we: Reject the null hypothesis Fail to reject the null hypothesis I dont understand this.
Test the claim that the proportion of men who own cats is smaller than 40% at the .10 significance level.The null and alternative hypothesis would be: H0:p=0.4H0:p=0.4H1:p≠0.4H1:p≠0.4 H0:μ=0.4H0:μ=0.4H1:μ≠0.4H1:μ≠0.4 H0:μ=0.4H0:μ=0.4H1:μ<0.4H1:μ<0.4 H0:p=0.4H0:p=0.4H1:p<0.4H1:p<0.4 H0:p=0.4H0:p=0.4H1:p>0.4H1:p>0.4 H0:μ=0.4H0:μ=0.4H1:μ>0.4H1:μ>0.4 The test is: right-tailed left-tailed two-tailed Based on a sample of 80 people, 34% owned catsThe test statistic is: (to 2 decimals)The critical value is: (to 2 decimals)Based on this we: Fail to reject the null hypothesis Reject the null hypothesis