Increasing Numbers of Businesses Are Offering Child-Care Benefits for Their $$\alpha = .10$$

Essay

Increasing numbers of businesses are offering child-care benefits for their workers.
However, one union claims that more than 90% of firms in the manufacturing sector still
do not offer any child-care benefits. A random sample of 340 manufacturing firms is
selected, and only 35 of them offer child-care benefits. Specify the rejection region that the
union will use when testing at $$\alpha = .10$$