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Minta:)

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I came on here to ask for advice and so far most of them have been helpful:)...

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    I can’t figure out this statistics problem!!?

    It says use normal distribution to answebthw question.

    b) Out of 1500 randomly selected scores, about how many would be expected to be greater than 21?

    Mean= 20.8

    Std. Dev.= 5.3

    The answer is 727, but why is it that? Can someone explain it to me and write it out? I’ve been on this problem for 2 days.

    I tried looking up an example and it said P(z>.1552)= .3557 how is that the answer? Someone please help!

    1 AnswerMathematics1 year ago
  • Attachment image

    I can’t figure this out.?

    How do you find answer b? Why is the answer 727 someone please explain it to me I’ve been on this problem for 2 days and it’s due tomorrow. Please explain in a written out way how to find the answer.

    1 AnswerHomework Help1 year ago
  • I can't figure out this statistics.?

    FIRST PROBLEM: The amounts of time per workout an athlete uses a stair climber are normally​ distributed, with a mean of 24 minutes and a standard deviation of 7 minutes. Find the probability that a randomly selected athlete uses a stair climber for​ (a) less than 20​minutes, (b) between 24 and 31minutes, (b) between 24 and 31 minutes, and (c) more than 40 min.

     

    SECOND PROBLEM: This second I know the first answer it's 36.70%, but I can't figure out the second ​

    (b) Out of 1500 randomly selected​ scores, about how many would be expected to be greater than​ 21?

    The mean is 20.8

    Std. Dev. 5.3

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    3 AnswersPolls & Surveys3 years ago
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    7 AnswersPsychology3 years ago
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    I'm sure you can I am celibate. I know people who aren't virgins who are celibate. Is there anyone out there who is celibate with kids. Single parents? Please explain. I'm eager to hear! :)

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