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The U.S. Bureau of Labor Statistics reports that 11.3% of U.S. workers belonged to labor unions...

The U.S. Bureau of Labor Statistics reports that 11.3% of U.S. workers belonged to labor unions in 2013. Suppose a sample of 400 U.S. workers is collected in 2018 to determine whether union efforts to organize have increased union membership.

a. Formulate the hypotheses that can be used to determine whether union membership increased in 2018 from 2013.

b. If the sample results who that 52 of the workers belonged to unions, what is  p ̅ ?

c. What is the value of the test statistic?

d. At a=0.05, what is your conclusion?

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