Mathmatics Question

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Mathmatics Question



Problem: According to a poll 40% of working Americans surveyed hold a degree. Suppose you conduct a survey on n=200 people see how many hold a degree.

a) find the z score associated with p=42% I got .5773 which is correct. But im supposed to use that number somehow in part (B) and thats where im stuck--below

b) Assume we can proximate this using a normal curve when n=200. Using your table calculate the pobability that the proportion of americans in the sample who hold a degree will be more than 42%. Like what to do? and which chart? zscore or the perccentage one T?



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