Reference no: EM132858354
Six months after the birth of a child, a wife and husband each take a test that measures adjustment to parenthood (a higher score indicates better adjustment). The wife's score is 66, and the husband's score is 59. Overall, the mean score for women on this test is 60 with a standard deviation of 3, the mean for men is 55 with a standard deviation of 4.
-Calculate z-scores to determine which of the two has adjusted better in relation to other people of the same gender? - Show all necessary work.
-How do you know which person has adjusted better?
-In general, is there more variability among women or men on adjustment scores? How do you know?
You are in charge of testing a random sample of 144 college-bound seniors. You administer the ACT program college entrance exam and calculate the means of the following four subsets.
English Mathematics Reading Science Reasoning
M = 20.2 M = 20.2 M = 21.3 M= 21.0
According to the test publisher, the standard deviation of the population of scores on the mathematics subset is σ = 4.9. Calculate the 95% confidence interval for this subset.
According to the test publisher, the standard deviation of the population of scores on the Reading subset is σ = 5.1. Calculate the 95% confidence interval for this subset.
Is it likely that the population mean for Mathematics would be 20? If yes why?
Is it likely that the population mean for Reading would be 20? If yes why?