A population is normally distributed with mean 18 and standard deviation 1.7. (a) Find the intervals representing one, two, and three standa

Question

A population is normally distributed with mean 18 and standard deviation 1.7. (a) Find the intervals representing one, two, and three standard deviations of the mean.

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Rose 1 month 2021-10-20T17:38:15+00:00 1 Answer 0 views 0

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    2021-10-20T17:39:43+00:00

    Answer:

    Interval within 1 standard deviation: (16.3,19.7)

    Interval within 2 standard deviation: (14.6, 21.4)

    Interval within 3 standard deviation: (12.9, 23.1)

    Step-by-step explanation:

    We are given the following in the question:

    Population mean, \mu = 18

    Standard deviation, \sigma = 1.7

    We have to find the following intervals:

    Interval within 1 standard deviation:

    \mu \pm 1\sigma\\=18 \pm 1.7\\=(16.3, 19.7)

    Interval within 2 standard deviation:

    \mu \pm 2\sigma\\=18 \pm 2(1.7)\\= 18 \pm 3.4\\=(14.6,21.4)

    Interval within 3 standard deviation:

    \mu \pm 3\sigma\\=18 \pm 2(1.7)\\= 18 \pm 5.1\\=(12.9,23.1)

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45:7+7-4:2-5:5*4+35:2 =? ( )