A Department Store Has Determined That 25% of All Their

question 9

Short Answer

A department store has determined that 25% of all their sales are credit sales. A random sample of 75 sales is selected.
a.What is the probability that the sample proportion will be greater than 0.34?
b.What is the probability that the sample proportion will be between 0.196 and 0.354?
c.What is the probability that the sample proportion will be less than 0.25?
d.What is the probability that the sample proportion will be less than 0.10?

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