The number of hours spent per week on household chores by all adults has a mean...

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The number of hours spent per week on household chores by all adults has a mean...

The number of hours spent per week on household chores by all adults has a mean of 26.4 hours and a standard deviation of 6.9 hours. The probability, rounded to four decimal places, that the mean number of hours spent per week on household chores by a sample of 60 adults will be more than 26.75 is:

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The number of hours spent per week on household chores by all adults has a mean...

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