The number of minutes needed to finish the Probability Distributions Unit Test is Normally distributed with a mean of 70 minutes and a stand

Question

The number of minutes needed to finish the Probability Distributions Unit Test is Normally distributed with a mean of 70 minutes and a standard deviation of 10 minutes. What proportion of students will finish the test in less than 55 minutes? What proportion of students will take between 48 and 72 minutes to finish the test? What proportion of students will take longer than 68 minutes to finish the test?

in progress 0
Euphemia 4 years 2021-08-12T17:10:49+00:00 1 Answers 11 views 0

Answers ( )

  1. dangkhoa
    0
    2021-08-12T17:12:41+00:00
    Reply

    Answer:

    it a and b and c and d

    Step-by-step explanation:

    i did it on ege

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )