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palacir999 palacir999
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7 years ago
John is self employed and his monthly income varies. His monthly income is normally distributed with a mean of 3900 and a standard deviation of 320.
 
  He is trying to determine the amount B that he can budget for his total monthly expenses. He needs to be pretty certain that his mean monthly income will be greater than B. What amount should he budget if he wants only a 0.05 chance that his mean monthly income for the next year is less than B?
  A) 3582 B) 3748 C) 4052 D) 3719
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clew0012clew0012
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