According to eMarketer, the average time spent per day with digital media in 2010 was 3 hours
Question:
According to eMarketer, the average time spent per day with digital media in 2010 was 3 hours and 14 minutes. For last year, a random sample of 20 American adults spent the following number of hours per day with digital media.
Find and interpret a 90% confidence interval for last year's mean time spent per day with digital media by American adults. (xÌ… = 5.16 hr and s = 2.30 hr.)
Transcribed Image Text:
1.4 5.0 5.8 4. 5.6 .1 6.5 2.3 8.0 9.5 2.8 5.1 4.5 4.1 6.6
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n 20 df 19 t 2 t 005 1729 x 516 hours s 230 hours 516 172...View the full answer
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