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What is the sampling distribution

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Reference no: EM131099560

A department store has determined that 25% of all their sales are credit sales. A random sample of 60 sales is selected.

(Please show full steps and excel formulas)

a) What is the sampling distribution of?

b) What is the probability that the sample proportion will be greater than 0.30?

c) What is the probability that the sample proportion will be between 0.20 to 0.30?

Reference no: EM131099560

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