Question

QUESTION 6 Find the standardized test statistic, z, to test the claim that p 1< p 2. Use α = 0.10. The sample statistics listed below are from independent samples. Sample statistics: n 1 = 550, x 1 = 121, and n 2 = 690, x 2 = 195 -2.513 1.116 -2.132 -0.985

QUESTION 7 A random sample of 100 students at a high school was asked whether they would ask their father or mother for help with a homework assignment in science. A second sample of 100 different students was asked the same question for an assignment in history. Forty-three students in the first sample and 47 students in the second sample replied that they turned to their mother rather than their father for help. Construct a 98% confidence interval for p 1 - p 2. (-1.113, 1.311) (-1.324, 1.521) (-0.204, 0.124) (-0.591, 0.762)

Answer 1

6)

7)

98% confidence interval =(-0.204 , 0.124)