The business college computing center wants to determine the proportion of business students who have personal computers (pc's) at home. if the proportion exceeds 30%, then the lab will scale back a proposed enlargement of its facilities. suppose 250 business students were randomly sampled and 75 have pc's at home. find the rejection region for this test using a = .05

- reject h is z is greater than 1.645

reject h is z= 1.645

reject h if z is less than -1.645

reject h if z is greater than 1.96 or z is less than -1.96

Option A) reject null hypothesis if z is greater than 1.645

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 250

p = 30% = 0.3

Alpha, α = 0.05

Number of women belonging to union , x = 75

First, we design the null and the alternate hypothesis  

This is a one-tailed(right) test.

Rejection Region:

So, the rejection region will be

That is we will reject the null hypothesis if the calculated z-statistic is greater than 1.645

Option A) reject null hypothesis if z is greater than 1.645

i think it might be a but you might want a second opinion