The mean score of adult men on a psychological test that measures "masculine stereotypes" is 4.88. a researcher studying hotel managers suspects that successful managers score higher than adult men in general. a random sample of 48 managers of large hotels has mean x-bar = 5.91. assume the population standard deviation is sigma = 3.2.

using the null and alternative hypotheses that you set up in problem 5, the value of the test statistic for this hypothesis test is

We use z-test for this hypothesis.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 4.88

Sample mean, = 5.91

Sample size, n = 48

Alpha, α = 0.05

Population standard deviation, σ = 3.2

First, we design the null and the alternate hypothesis

The null hypothesis states that the mean score of successful managers on a psychological test is 4.88 and the alternate hypothesis says that the mean score of successful managers on a psychological test is greater than 4.88.

We use One-tailed z test to perform this hypothesis.

Formula:

Putting all the values, we have

the correct answer to your question is a. 4^4

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step-by-step explanation: