Assume that matched pairs of data result in the given number of signs when the value of the second variable is subtracted from the corresponding value of the first variable. Use the sign test with a 0.05 significance level to test the null hypothesis of no difference. Positive signs: 15; negative signs: 5; ties: 7 (from a class project testing for die difference between reported and measured heights of females)

Solution 6BSC Step 1 By assuming that matched pairs of data result in the given number of signs when the value of the second variable is subtracted from the corresponding value of the first variable. We use the sign test with a 0.05 significance level to test the null hypothesis of no difference. The Hypotheses can be expressed as H0 There is no difference between heights of females H1 There is a difference between heights of females We know that, Positive signs = 15 Negative signs = 5 Number of ties = 7