Question

the business college computing center wants to determine the proportion of business students who have laptop computers. 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 laptops. find the rejection region for the corresponding test using reject h0 if z > 1.645. reject h0 if z > 1.96 or z < -1.96. reject h0 if z

Answer 1

As per the question, the correct statement is Option A) reject null hypothesis if z is greater than 1.645

Given that,

Sample size, n = 250, p = 30% = 0.3, alpha, = 0.05, and the proportion of unionized women, x = 75

Assuming that p = 0.3, the null and the alternative hypothesis are both that p > 0.3.

This test has one tail (the right one).

Critical Rejection Region z = 1.645 at 0.05 level of significance

Therefore, z > 1.645 is the rejection region.

In other words, if the estimated z-statistic is higher than 1.645, we will reject the null hypothesis.

A set of presented observations cannot be shown to have any statistical significance, according to the null hypothesis. Using sample data, hypothesis testing is done to assess whether a theory is valid. The words "no effect," "no difference," or "no correlation" are widely used to describe null hypotheses.

To learn more about null hypothesis: https://brainly.com/question/25263462

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