According to a survey, only 35% of customers who visited the web site of a major retail store made a purchase. Random samples of size 50 are selected. What is the probability that the sample proportion will have between 20% and 30% of customers who will make a purchase after visiting the web site? a. None of the above Ob. 0.0132 O c. 0.2296 O d. 0.2164

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