About 95% of the weights for individual raccoons in this population fall between what two values?
About 95% of the weights for individual raccoons in this population fall between what two values?
About 95% of the mean weights from samples of size 25 raccoons from this population fall between what two values?
The Baltimore Sun (Haney, 21 February 1995) reported on a study by Dr. Sara Harkness, in which she observed the sleep patterns of 6-month-old infants. She found that a sample of n = 49 infants in the U.S. slept an average of 13 hours per day, and that the standard deviation of this sample was 0.5 hours.
Compute a 90% confidence interval for the mean sleep time per day for 6-month-old infants in the U.S.
Show your work and express your answer using exactly two (2) decimal places.
The Baltimore Sun (Haney, 21 February 1995) reported on a study by Dr. Sara Harkness, in which she observed the sleep patterns of 6-month-old infants. She found that a sample of n = 49 infants in the U.S. slept an average of 13 hours per day, and that the standard deviation of this sample was 0.5 hours.
Interpret the confidence interval you computed above using words that someone with no training in statistics might understand.