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Confidence interval for the difference in mean tv watching

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Reference no: EM132853472

Advertisers fear that users of DVRs (digital video recorders) will "fast forward" past commercials when they watch a recorded program. A leading British pay television company told its advertisers that this effect might be offset because DVR users watch more TV. A sample of 15 DVR users showed a daily mean screen time of 2 hours and 26 minutes with a standard deviation of 14 minutes, compared with a daily mean of 2 hours and 7 minutes with a standard deviation of 12 minutes for a sample of 15 non-DVR users.

(a-1) Construct a 95 percent confidence interval for the difference in mean TV watching. (Round your answers to 2 decimal places.)

The 95% confidence interval is from to ------------ to ---------

Reference no: EM132853472

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