Question

Hypothesis Test. Gender bias researchers compared the promotion rate of 412 women in manufacturing management positions to the national average which was known to be 75 months for a mostly male population. They measured the number of months each woman worked in middle management before being promoted to senior management, and found an average 79 months (s.d. = 19). Researchers want to know if women are promoted more slowly (i.e. after a larger number of months). Question. What is the correct null hypothesis? Họ : 4 = 75 O H. := 75 O H: =79 H. :v = 79 Question 2 (1 point) Hypothesis Test. Gender bias researchers compared the promotion rate of 412 women in manufacturing management positions to the national average which was known to be 75 months for a mostly male population. They measured the number of months each woman worked in middle management before being promoted to senior management, and found an average 79 months (s.d. = 19). Researchers want to know if women are promoted more slowly (.e. after a larger number of months). Question. What is the correct alternative hypothesis? H. :=79 H:H<79 0 H:> 79 O H:#79 O None of these.

Answer 1

The correct null hypothesis is $H_0:\mu = 75$

The correct alternative hypothesis is $H_1:\mu > 75$ ,

since the claim is true average number of months is larger than 75.