Asked by Hope

Compare the 95% and 99% confidence intervals for the hours of sleep a student gets. Explain the difference between these intervals and why this difference occurs.

95% confidence intervals: 6.214, 7.686
99% confidence intervals: 5.944, 7.956
Answered by PsyDAG
95% = ± 1.96 SD

99% = ± 2.575 SD
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