The popularity of a music group is normally distributed with a mean of 5 years (-s)...

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The popularity of a music group is normally distributed with a mean of 5 years (-s) and a standard deviation of 2 years ( = 2). If 32 music groups were randomly selected (n =32), find the probability that their years of popularity have a mean that lasts less than 4 years. 0.0023 0.0046 0.0124 0.0256 The popularity of a music group is normally distributed with a mean of 5 years (-s) and a standard deviation of 2 years ( = 2). If 32 music groups were randomly selected (n =32), find the probability that their years of popularity have a mean that lasts less than 4 years. 0.0023 0.0046 0.0124 0.0256