subject
Mathematics, 25.06.2020 05:01 allicat133

According to a 2011 report by the United States Department of Labor, civilian Americans spend 2.75 hours per day watching television. A faculty researcher, Dr. Sameer, at California Polytechnic State University (Cal Poly) conducts a study to see whether a different average applies to Cal Poly students. Suppose that for a random sample of 100 Cal Poly students, the mean and standard deviation of hours per day spent watching TV turns out to be 3.01 and 1.97 hours, respectively. The data were used to find a 95% confidence interval: (2.619, 3.401) hours/day. Which of the following are INVALID interpretations of the 95% confidence interval? A. About 95% of all Cal Poly students spend between 2.619 and 3.401 hours/day watching TV. B. There is a 95% chance that, on average, Cal Poly students spend between 2.619 and 3.401 hours/day watching TV. C. We are 95% confident that, on average, these 100 Cal Poly students spend between 2.619 and 3.401 hours/day watching TV. D. In the long run, 95% of the sample means will be between 2.619 and 3.401 hours. E. None of the above.

ansver
Answers: 1

Another question on Mathematics

question
Mathematics, 21.06.2019 21:00
What would the rule be for the reflection of y=-3
Answers: 1
question
Mathematics, 22.06.2019 00:00
Astocks price gained 3% in april and 5% in may and then lost 4% in june and 1% in july during which month did the stocks price change the most
Answers: 1
question
Mathematics, 22.06.2019 00:30
What are two numbers that have a sum of 15?
Answers: 2
question
Mathematics, 22.06.2019 01:30
Travis and paula went to lunch.travis ordered a sandwich for $7.50 and paula ordered a burger for $5.25.after lunch,they left a 15% tip for the waiter.how many money did they spend altogether?
Answers: 3
You know the right answer?
According to a 2011 report by the United States Department of Labor, civilian Americans spend 2.75 h...
Questions
question
English, 18.01.2022 23:30