statistics

According to a college survey, 22% of all students work full time. Find the mean and standard deviation for the number of students who work full time in samples of size 16.

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  1. mu = np
    mean = np
    = 0.22 *16 =3.52
    Standard Deviation = Sqrt(n PQ)
    = Sqrt(16 *.22 *.78)
    = 1.656985

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  2. A 27 year old woman decides to pay $156 for a 1 year life insurance policy with coverage of $100,000. The probability of her living through the year is 0.9995. Determine her expected value for the insurance policy show work

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  3. According to a college survey, 22% of all students work full time. Find the mean for the number of students who work full time in samples of size 16.

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