About Homework 10, Question 5, Part B

edited June 21 in Student Questions

Suppose that we are to conduct the following hypothesis test:

%H_0: μ=40%
%H_1: μ<40%

Suppose that you also know that σ=11, n=107, x¯=37, and take α=0.04. Draw the sampling distribution, and use it to determine each of the following:

I determined that z (aka standardized test statistic) was equal to -2.8211 and that p is equal to 0.0024. However, I'm struggling on how to find/create the interval. Does anyone know a specific formula I should use, or what general data points I should draw on to create my interval?

Thanks in advance.

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