5. Hitz FM, an FM stereo station which a rock and roll format, finds that the mean length of time a person is tuned to the station is normally distributed with mean of 45.0 minutes and a standard deviation of 10 minutes. Let be the mean length of life tuned to Hitz FM of a random sample of 25 listeners. (a) It is possible that is less than 40 minutes? Explain. (b) Can be more than 55 minutes? Justify your answer. (c) What can say about the probability of lies between 41 and 49 minutes?
5. Hitz FM, an FM stereo station which a rock and roll format, finds that the mean length of time a person is tuned to the station is normally distributed with mean of 45.0 minutes and a standard deviation of 10 minutes. Let be the mean length of life tuned to Hitz FM of a random sample of 25 listeners. (a) It is possible that is less than 40 minutes? Explain. (b) Can be more than 55 minutes? Justify your answer. (c) What can say about the probability of lies between 41 and 49 minutes?
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ISBN:9781119256830
Author:Amos Gilat
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Transcribed Image Text:5. Hitz FM, an FM stereo station which a rock and roll format, finds that the mean length of
time a person is tuned to the station is normally distributed with mean of 45.0 minutes and
a standard deviation of 10 minutes. Let be the mean length of life tuned to Hitz FM of a
random sample of 25 listeners.
(a) It is possible that is less than 40 minutes? Explain.
(b) Can be more than 55 minutes? Justify your answer.
(c) What can say about the probability of lies between 41 and 49 minutes?
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