Based on past data, the owner of a store believes that 80% of customers who walk in
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Question:
Based on past data, the owner of a store believes that 80% of customers who walk in his store will make a purchase.Say, a random sample of 83 customers walks in his store and 69% of these made a purchase. What is the standard deviation of the sampling distribution of the sample proportion of customers who walk in and make a purchase in this store?
a, 0.00
b 0.04
c, -250.54
d, 0.05
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