Bookstore has a website for which 90 percent of their book sales are to out of state customers and not subject to the collection of sales tax . The sample proportion of all sales to out of state customers from samples of size 100 will vary in repeated sampling. The sampling distribution for p is aproximately normal with a mean of 0.9 and s.deviation of 0.03. Find probabilities that between of 0.87 and 0.93 are out of state customers,that at least probability of .93 are out of state customers, that most 0.81 is out of state and that least 0.88 out of state ?

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