The average GPA of a random sample of 11 college students who take evening classes was calculated to be 3.15 with a standard deviation of 0.06. The average GPA of a random sample of 23 college students who take daytime classes was calculated to be 3.2 with a standard deviation of 0.02. Test the claim that the mean GPA of night students is smaller than the mean GPA of day students at the .025 significance level. Claim: Select an answer which corresponds to Select an answer Opposite: Select an answer which corresponds to Select an answer The test is: Select an answer The test statistic is: t = (to 2 decimals) The P-value is: Select an answer Based on this we: Select an answer Conclusion There Select an answer appear to be enough evidence to support the claim that the mean GPA of night students is smaller than the mean GPA of day students.
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State the null and alternative hypotheses: Null hypothesis (H0): The mean GPA of night students is equal to the mean GPA of day students, i.e., Ī¼1 = Ī¼2. Alternative hypothesis (H1): The mean GPA of night students is smaller than the mean GPA of day students, Show moreā¦
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1.) The average GPA of a random sample of 13 college students who take evening classes was calculated to be 2.7 with a standard deviation of 0.04. The average GPA of a random sample of 17 college students who take daytime classes was calculated to be 2.67 with a standard deviation of 0.05. Test the claim that the mean GPA of night students is larger than the mean GPA of day students at the .025 significance level. Claim: ____? which corresponds to ____? Opposite: ____? which corresponds to ____? The test is: Left, right or two tailed ? The test statistic is: t = ____? The critical value is: t?= ___? Based on this we: reject, accept, fail to reject or cannot determine hypothesis ? There Select an answer does or does not appear? to be enough evidence to support the claim that the mean GPA of night students is larger than the mean GPA of day students.
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You are testing the claim that the mean GPA of night students is different from the mean GPA of day students. A sample of 23 night students and 22 day students and their GPA's are recorded below. Test the claim using a 1% level of significance. Assume the population variances are unequal and that GPAs are normally distributed. Give answers to 4 decimal places. What are the correct hypotheses? Note this may view better in full screen mode. Select the correct symbols in the order they appear in the problem. H0: Select an answer H1: Select an answer Based on the hypotheses, find the following: Test Statistic= p-value= The correct decision is to Select an answer. The correct summary would be: Select an answer that the mean GPA of night students is different from the mean GPA of day students.
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You are testing the claim that the mean GPA of night students is different from the mean GPA of day students. You sample 20 night students, and the sample mean GPA is 2.99 with a standard deviation of 0.66. You sample 40 day students, and the sample mean GPA is 2.96 with a standard deviation of 0.49. Test the claim using a 10% level of significance. Assume the population standard deviations are unequal and that GPAs are normally distributed. Give answer to at least 4 decimal places. What are the correct hypotheses? H0: Ī¼1 = Ī¼2 H1: Ī¼1 ā Ī¼2 Based on the hypotheses, find the following: Test Statistic = Critical Values = Ā± (Just enter the positive CV.) The correct decision is to Select an answer The correct summary would be: Select an answer that the mean GPA of night students is different from the mean GPA of day students.
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