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A humane society claims that less than 32​% of U.S. households own a dog. In a random sample of 402

U.S.​ households, 155 say they own a dog. At (alpha equals) 0.03​, is there enough evidence to support the​ society's claim?

​(a) Write the claim mathematically and identify 

Upper H 0 and Upper H Subscript a

​(b) Find the critical​ value(s) and identify the rejection​ region(s).

 (c) Find the standardized test statistic.​ 

(d) Decide whether to reject or fail to reject the null​ hypothesis, 

(e) interpret the decision in the context of the original claim. 

I need help with b and c

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