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1.A department store has determined that 45% of all their sales are credit sales. A random sample of 100 sales is selected. a.What is the

1.A department store has determined that 45% of all their sales are credit sales. A random sample of 100 sales is selected.

a.What is the sampling distribution of the sample proportion, p? Why?

b.What is the probability that the sample proportion will be greater than 0.40?

c.What is the probability that the sample proportion will be within 5% of the population proportion?

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