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B. 68% of shoppers who visit Store A in a shopping mall make a purchase at the store. (i) If you randomly select 16 shoppers,

B. 68% of shoppers who visit Store A in a shopping mall make a purchase at the store.

(i) If you randomly select 16 shoppers, what is the probability that at most 13 of them made a purchase from the store.

(ii) Calculate the expected value and standard deviation of the number of people who did not make any purchase at the store.

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