A null hypothesis states that p=.5, the observed sample proportion is p=.592 with a sample size of n=67. Determine the z-score. O 1.22 O 1.74 1.51 -2.13

9:56 AM Sat Dec 19 * 67% +: 0 3) For the sample below, find the range, quartiles, interquartile range, and 5-number summary. 27, 28, 30, 31, 31, 32, 34, 36, 39, 41, 44, 45 2 19 >

The average American gets a haircut every 43 days. Is the average different for college students? The data below shows the results of a survey of 11 college students asking them how many days elapse between haircuts. Assume that the distribution of the population is normal. 32, 46, 49, 45, 50, 49, 43, 45, 38, 46, 42 What can be concluded at the the a =0.01 level of significance level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Họ: ? Select an answer v H. Select an answer Y C. The test statistic ? (please show your answer to 3 decimal places.) d. The p-value - (Please show your answer to 3 decimal places.) e. The p-value is 2 f. Based on this, we should Select an answer the null hypothesis, g. Thus, the final conclusion is that, The data suggest the populaton mean is significantly different from 43 ata = 0.01, so there is fficient evidence tr conrlide that -he nonulation.

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