A Gallup poll asked 1031 Americans How much TV do you watch

A Gallup poll asked 1031 Americans How much TV do you watch each week? The results showed a mean of 3.4 hours with a standard deviation of 1.8 hours. Determine a 95% confidence interval for the number of hours that TV is watched.

Confidence Interval = Mean - (Critical Value of T * StandardError of Mean) to Mean + (Critical Value of T * Standard Error ofMean)

Mean = 3.4

Degree of Freedom = 1031 - 1 = 1030

Critical Value of T at 95% (Two-Tailed Test) (Use Table inStat Book) = 1.96

Standard Error of Mean = (Standard Deviation) / (SampleSize)^(1/2) = 1.8 / (1031)^(1/2)

+-0.10987509

A Gallup poll asked 1031 Americans How much TV do you watch each week? The results showed a mean of 3.4 hours with a standard deviation of 1.8 hours. Determine

A Gallup poll asked 1031 Americans How much TV do you watch

Solution

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