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Suppose that recent poll found that 60% of adults believe that the overall state of moral values is poor. Complete parts (a) through (c). (a) For 400 randomly selected adults, compute the mean and standard deviation of the random variable X, the number of adults who believe that the overall state of moral values is poor. The mean of X is 240. (Round to the nearest whole number as needed.) The standard deviation of X is (Round to the nearest tenth as needed.)

Suppose that recent poll found that 60% of adults believe that the overall state of moral values is poor. Complete parts (a) through (c). (a) For 400 randomly selected adults, compute the mean and standard deviation of the random variable X, the number of adults who believe that the overall state of moral values is poor. The mean of X is 240. (Round to the nearest whole number as needed.) The standard deviation of X is (Round to the nearest tenth as needed.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Suppose that a recent poll found that 60% of adults believe that the overall state of moral values is poor. Complete parts (a) through (c). (a) For 400 randomly selected adults, compute the mean and standard deviation of the random variable X, the number of adults who believe that the overall state of moral values is poor. The mean of X is 240. (Round to the nearest whole number as needed.) The standard deviation of X is. (Round to the nearest tenth as needed.)
Transcribed Image Text:Suppose that a recent poll found that 60% of adults believe that the overall state of moral values is poor. Complete parts (a) through (c). (a) For 400 randomly selected adults, compute the mean and standard deviation of the random variable X, the number of adults who believe that the overall state of moral values is poor. The mean of X is 240. (Round to the nearest whole number as needed.) The standard deviation of X is. (Round to the nearest tenth as needed.)
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Follow-up Question
Suppose that a recent poll found that 60% of adults believe that the overall state of moral values is poor. Complete parts (a) through (c). (a) For 400 randomly selected adults, compute the mean and standard deviation of the random variable X, the number of adults who believe that the overall state of moral values is poor. The mean of X is 240. (Round to the nearest whole number as needed.) The standard deviation of X is 9.8. (Round to the nearest tenth as needed.) (b) Interpret the mean. Choose the correct answer below. A. For every 240 adults, the mean is the maximum number of them that would be expected to believe that the overall state of moral values is poor. B. For every 400 adults, the mean is the minimum number of them that would be expected to believe that the overall state of moral values is poor. C. For every 400 adults, the mean is the range that would be expected to believe that the overall state of moral values is poor. D. For every 400 adults, the mean is the number of them that would be expected to believe that the overall state of moral values is poor. (c) Would it be unusual if 233 of the 400 adults surveyed believe that the overall state of moral values is poor? Yes No
Transcribed Image Text:Suppose that a recent poll found that 60% of adults believe that the overall state of moral values is poor. Complete parts (a) through (c). (a) For 400 randomly selected adults, compute the mean and standard deviation of the random variable X, the number of adults who believe that the overall state of moral values is poor. The mean of X is 240. (Round to the nearest whole number as needed.) The standard deviation of X is 9.8. (Round to the nearest tenth as needed.) (b) Interpret the mean. Choose the correct answer below. A. For every 240 adults, the mean is the maximum number of them that would be expected to believe that the overall state of moral values is poor. B. For every 400 adults, the mean is the minimum number of them that would be expected to believe that the overall state of moral values is poor. C. For every 400 adults, the mean is the range that would be expected to believe that the overall state of moral values is poor. D. For every 400 adults, the mean is the number of them that would be expected to believe that the overall state of moral values is poor. (c) Would it be unusual if 233 of the 400 adults surveyed believe that the overall state of moral values is poor? Yes No
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Follow-up Question
Suppose that a recent poll found that 60% of adults believe that the overall state of moral values is poor. Complete parts (a) through (c). (a) For 400 randomly selected adults, compute the mean and standard deviation of the random variable X, the number of adults who believe that the overall state of moral values is poor. The mean of X is 240. (Round to the nearest whole number as needed.) The standard deviation of X is 9.8. (Round to the nearest tenth as needed.) (b) Interpret the mean. Choose the correct answer below. A. For every 240 adults, the mean is the maximum number of them that would be expected to believe that the overall state of moral values is poor. B. For every 400 adults, the mean is the minimum number of them that would be expected to believe that the overall state of moral values is poor. C. For every 400 adults, the mean is the range that would be expected to believe that the overall state of moral values is poor. D. For every 400 adults, the mean is the number of them that would be expected to believe that the overall state of moral values is poor.
Transcribed Image Text:Suppose that a recent poll found that 60% of adults believe that the overall state of moral values is poor. Complete parts (a) through (c). (a) For 400 randomly selected adults, compute the mean and standard deviation of the random variable X, the number of adults who believe that the overall state of moral values is poor. The mean of X is 240. (Round to the nearest whole number as needed.) The standard deviation of X is 9.8. (Round to the nearest tenth as needed.) (b) Interpret the mean. Choose the correct answer below. A. For every 240 adults, the mean is the maximum number of them that would be expected to believe that the overall state of moral values is poor. B. For every 400 adults, the mean is the minimum number of them that would be expected to believe that the overall state of moral values is poor. C. For every 400 adults, the mean is the range that would be expected to believe that the overall state of moral values is poor. D. For every 400 adults, the mean is the number of them that would be expected to believe that the overall state of moral values is poor.
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