The average American gets a haircut every 44 days. Is the average smaller for college students? The data below shows the results of a survey of 20 college students asking them how many days elapse between haircuts. Assume that the distribution of the population is normal. 43, 44, 49, 47, 32, 38, 30, 40, 45, 48, 34, 37, 48, 37, 35, 42, 42, 31, 40, 50 Copy to clipboard What can be concluded at the = 0.10 level of significance? a For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ?v Salect an answe H1: ? Select ap answer c. The test statistic ? (please show your answer to 3 decimal places.) d. The p-value = |(Please show your answer to 4 decimal places.) e. The p-value is ? va f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the conclusion is that ... Select an answer Select an answer At the 10% significance level, the data suggest there is sufficient evidence that p lower than 44 At the 10% significance level, the data suggest there is insufficient evidence that u lower than 44
The average American gets a haircut every 44 days. Is the average smaller for college students? The data below shows the results of a survey of 20 college students asking them how many days elapse between haircuts. Assume that the distribution of the population is normal. 43, 44, 49, 47, 32, 38, 30, 40, 45, 48, 34, 37, 48, 37, 35, 42, 42, 31, 40, 50 Copy to clipboard What can be concluded at the = 0.10 level of significance? a For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ?v Salect an answe H1: ? Select ap answer c. The test statistic ? (please show your answer to 3 decimal places.) d. The p-value = |(Please show your answer to 4 decimal places.) e. The p-value is ? va f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the conclusion is that ... Select an answer Select an answer At the 10% significance level, the data suggest there is sufficient evidence that p lower than 44 At the 10% significance level, the data suggest there is insufficient evidence that u lower than 44
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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Denote μ as the true average number of days that college students get a haircut.
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