The president of Doerman Distributors, Inc. believes that 30% of the firm's orders come from first time customers. A random sample of 100 orders will be used to estimate the proportion of the first time customers. a) Assume that the president is correct and p=0.30. What is the sampling distribution of b) What is the probability that the sample proportion p bar will be between 0.20 and 0.40? use excel please

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