Question: 1 Twenty randomly selected managers were found to spend a mean time of 2.4 hours per day on paperwork, according to a time-use study. The

Twenty randomly selected managers were found to spend a mean time of 2.4 hours per day on paperwork, according to a time-use study. The standard deviation of the 20 scores was 1.30 hours. Construct a 90% confidence interval for the mean time spent on paperwork by all managers.

x-bar =

s =

n =

d.f. =

critical value =

E =

confidence interval, least to greatest:________to_________

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