Aconsulting firm had predicted that 30% of employees at a large firm would take advantage of a new company credit union, but management is skeptical. they felt the rate would be lower. a survey of 250 employees show that 82 of them are currently taking advantage of the credit union. calculate the appropriate test statistic based on this data.

According to the data presented, the most convenient is to make an approximation through Z-Stadistic Proportions) For the sample size)

So things,

A)

b) Given and so sample proportion

c)

So, A z-value less than 2 or more than 2 is considered unusually small and unusually large respectively,

Then, Since z=0.96<2, the z-test stadistic is unusually small.

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