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3 April, 23:04

A simple random sample of 30 students was selected from a normally distributed population of high

school students. The following confidence intervals were calculated at 90, 95, and 99% confidence levels

to estimate the average number of hours of sleep the students got each night. Determine which

confidence level goes with each confidence interval.

Between 7.3 and 8.7 hours of sleep:

Between 7.0 and 9.0 hours of sleep:

Between 7.2 and 8.8 hours of sleep:

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Answers (2)
  1. 3 April, 23:17
    0
    Between 7.3 and 8.7 hours of sleep: 90% confindence level

    Between 7.0 and 9.0 hours of sleep: 99% confindence level

    Between 7.2 and 8.8 hours of sleep: 95% confindence level

    Second Part: between 7.0 and 9.0 hours of sleep
  2. 3 April, 23:26
    0
    90% confidence

    99% confidence

    95%confidence

    Step-by-step explanation:

    Then next is between 7.0 and 9.0 hours of sleep
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