SOLUTION: Because of their sleep deprivation new parents have a hard time focusing. The average number of minutes a new parent can focus equals 3.7. The standard deviation equals 0.8. You as

Question 1025578: Because of their sleep deprivation new parents have a hard time focusing. The average number of minutes a new parent can focus equals 3.7. The standard deviation equals 0.8. You assess how long 150 randomly selected new parents can focus and find the mean equals 3.8 minutes and the standard deviation equals 0.5. What is the 95% confidence interval?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Because of their sleep deprivation new parents have a hard time focusing. The average number of minutes a new parent can focus equals 3.7. The standard deviation equals 0.8. You assess how long 150 randomly selected new parents can focus and find the mean equals 3.8 minutes and the standard deviation equals 0.5. What is the 95% confidence interval?
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x-bar = 3.8
ME = 1.96*0.5/sqrt150 = 0.08
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95% CI:: 3.8-0.08 < u < 3.8+0.08
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Cheers,
Stan H.
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