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Answer to Question #59275 in Statistics and Probability for asma
Question #59275
1) A survey was conducted to measure the number of hours per week adults spend on home computers. In the survey, the number of hours were normally distributed, with a mean of 7 hours and a standard deviation of 1.5 hours.
a) What is the probability that the sample mean of 9 participants exceeds 8 hours?
b) What is the probability that the sample mean of 9 participants is below 6.5 hours?
c) What is the probability that the sample mean of 25 participants is between 6.8 and 7.8 hours?
a) What is the probability that the sample mean of 9 participants exceeds 8 hours?
b) What is the probability that the sample mean of 9 participants is below 6.5 hours?
c) What is the probability that the sample mean of 25 participants is between 6.8 and 7.8 hours?
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