Recall Example 7.2.3, where Nakamura et al. (A-1) studied subjects with acute medial collateral ligament injury (MCL) with anterior cruciate ligament tear (ACL). The ages of the 17 subjects were: 31; 26; 21; 15; 26; 16; 19; 21; 28; 27; 22; 20; 25; 31; 20; 25; 15 Use these data to determine if there is sufficient evidence for us to conclude that in a population of similar subjects, the variance of the ages of the subjects is not 20 years. Let a ¼ :01.

Let hh represent the number of hummingbirds and ss represent the number of sunbirds that must pollinate the colony so it can survive until next year. 6h+4s > 746h+4s> 74 this year, 88 hummingbirds pollinated the colony. what is the least number of sunbirds that must pollinate the colony to ensure that it will survive until next year?

Arecent study focused on the number of times men and women who live alone buy take-out dinner in a month. assume that the distributions follow the normal probability distribution and the population standard deviations are equal. the information is summarized below. statistic men women sample mean 24.85 21.33 sample standard deviation 5.54 4.93 sample size 34 36 at the 0.01 significance level, is there a difference in the mean number of times men and women order take-out dinners in a month? state the decision rule for 0.01 significance level: h0: μmen= μwomen h1: μmen ≠ μwomen. (negative amounts should be indicated by a minus sign. round your answers to 3 decimal places.) compute the value of the test statistic. (round your answer to 3 decimal places.) what is your decision regarding the null hypothesis? what is the p-value? (round your answer to 3 decimal places.)

What is the solution set for z+10=z-2