Test Hypotheses About a Population Proportion
-Increasing Numbers of Businesses $85 \%$

Essay

Test Hypotheses about a Population Proportion
-Increasing numbers of businesses are offering child-care benefits for their workers. However, one union claims that more than $85 \%$ of firms in the manufacturing sector still do not offer any child-care benefits to their workers. A random sample of 330 manufacturing firms is selected, and only 28 of them offer child-care benefits. Specify the rejection region that the union will use when testing at $\alpha = 0.10$ .