## Question

###### Monthly cell phone bills for a residents of a city are approximately normally distributed and a have a mean of $82 and standard deviation of $11 . Simple random samples of 100 are drawn and the mean is determined for each sample . what is the probability that the sample mean cell phone is $100 or more ?

Monthly cell phone bills for a residents of a city are approximately normally distributed and a have a mean of $82 and standard deviation of $11 . Simple random samples of 100 are drawn and the mean is determined for each sample . what is the probability that the sample mean cell phone is $100 or more ?

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