Mathematics, 13.10.2020 05:01, Jharsh2300
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 29 minutes with a standard deviation of 15 minutes, compared with a daily mean of 2 hours and 6 minutes with a standard deviation of 12 minutes for a sample of 15 non-dvr users.
Required:
a. Construct a 95 percent confidence interval for the difference in mean TV watching.
b. Would this sample support the company’s claim (i. e., is zero within the confidence interval for the mean difference)?
c. State any assumptions that are needed.
Answers: 1
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 13:40, kemzzoo7206
Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? 8,000 + 24x 8,000 − 24x 8,000 + 2x 8,000 − 2x
Answers: 1
Mathematics, 21.06.2019 14:30, ayoismeisjjjjuan
If anyone has done the algebra 2 chaos theory portfolio would you be wiling to me? i kind of know what i'm doing i just don't know if i'm doing it right.
Answers: 1
Mathematics, 21.06.2019 17:50, 27lcasselberry
Which of these triangle pairs can be mapped to each other using two reflections?
Answers: 1
Do you know the correct answer?
Advertisers fear that users of dvrs (digital video recorders) will "fast forward" past commercials w...
Questions in other subjects:
Chemistry, 23.10.2019 02:00
