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According to a survey in a country, 39 % of adults do not own a credit...
According to a survey in a country, 39 % of adults do not own a credit card. Suppose a simple random sample of 200 adults is obtained. Complete parts (a) through (d) below.
(a) Describe the sampling distribution p the sample proportion of adults who do not own a credit card. Choose the phrase that best describes the shape of the sampling distribution of p below.
Determine the mean of the sampling distribution of
Determine the standard deviation of the sampling distribution of
(b) What is the probability that in a random sample of 200 adults, more than 42% do not own a credit card?
Interpret this probability.
(c) What is the probability that in a random sample of 200 adults, between 37% and 42% do not own a credit card?
d) Would it be unusual for a random sample of 200 adults to result in 74 or fewer who do not own a credit card? Why?
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