11. According to creditcard.com, 29% of adults do not own a credit card. Suppose a random...
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11. According to creditcard.com, 29% of adults do not own a credit card. Suppose a random sample of 500 adults is asked "Do you own a credit card?" (23 points) a. Describe the sampling distribution of p, the sample proportion of adults that do not own a credit card. Be sure to verify the model requirements. (Hint: shape, center and spread) b. Use the sampling distribution to determine the probability that in a random sample of 500 adults more than 30% do not own a credit card. c. Use the sampling distribution to determine the probability that in a random sample of 500 adults between 25% and 30% do not own a credit card. d. Would it be unusual for a random sample of S00 adults to result in 131 or fewer who do not own a credit card? 11. According to creditcard.com, 29% of adults do not own a credit card. Suppose a random sample of 500 adults is asked "Do you own a credit card?" (23 points) a. Describe the sampling distribution of p, the sample proportion of adults that do not own a credit card. Be sure to verify the model requirements. (Hint: shape, center and spread) b. Use the sampling distribution to determine the probability that in a random sample of 500 adults more than 30% do not own a credit card. c. Use the sampling distribution to determine the probability that in a random sample of 500 adults between 25% and 30% do not own a credit card. d. Would it be unusual for a random sample of S00 adults to result in 131 or fewer who do not own a credit card?
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Related Book For
Elementary Statistics
ISBN: 978-0538733502
11th edition
Authors: Robert R. Johnson, Patricia J. Kuby
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