Ophelia O'Brien, VP of Consumer Credit of American First Banks (AFB), monitors the default rate...

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Accounting

Ophelia O'Brien, VP of Consumer Credit of American First Banks (AFB), monitors the default rate on personal loans at the AFB
member banks. One of her standards is "no more than 5% of personal loans should be in default." On each Friday, the default rate is
calculated for a sample of 500 personal loans. Last Friday's sample contained 30 defaulted loans. Using a=0.10, the appropriate
decision is to
reject the null hypothesis
reduce the sample size
do nothing
increase the sample size
fail to reject the null hypothesis
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