Question: A professor finds that for 16 randomly selected students the time needed to complete an assignment had a sample mean of 66 minutes and a

  1. A professor finds that for 16 randomly selected students the time needed to complete an assignment had a sample mean of 66 minutes and a sample standard deviation of 40 minutes. If the time needed to complete the assignment is normally distributed, then thestandard error of the meanis

    a.

    5
    b.

    20
    c.

    10
    d.

    16

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