Mothers with young children often complain that they do not get enough sleep. Suppose that you...

Mothers with young children often complain that they do not get enough sleep. Suppose that you obtained a measure of the typical amount of sleep of 9 mothers of children under 1 year of age and found the following duration (in hours): 6.4, 7.5, 6.9, 7.3, 7.6, 7.1, 6.5, 7.7, and 7.8 Does the mean amount of sleep from these mothers differ significantly from a hypothesized population mean of 7.7 hours sleep per night? Use a two-tailed test and a 0.05 significance level

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