Question

In a particular retail clothing store, approximately 25% of potential customers who walk into the store make a purchase. In a random sample of 25 customers that walked into the store, a. what is the probability that exactly 11 of the customers make purchases? Round to 3 significant digits. b. what is the probability that at least 2 of the customers make purchases? Round to 3 significant digits. c. how many of the customers are expected to make purchases? Round to 3 significant digits. d. what is the standard deviation of the number of customers who make purchases? Round to 3 significant digits.

          In a particular retail clothing store, approximately 25% of
potential customers who walk into the store make a purchase.
In a random sample of 25 customers that walked into the store,
a. what is the probability that exactly 11
of the customers make purchases?
Round to 3 significant digits.
b. what is the probability that at least 2
of the customers make purchases?
Round to 3 significant digits.
c. how many of the customers are expected
to make purchases?
Round to 3 significant digits.
d. what is the standard deviation of the
number of customers who make purchases?
Round to 3 significant digits.

Added by Alfonso H.

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