Solution Found!
In Exercises, assume that the paired sample
Chapter 9, Problem 20BSC(choose chapter or problem)
Problem 20BSC
In Exercises, assume that the paired sample data are simple random samples and that the differences have a distribution that is approximately normal.
Forecast and Actual Temperatures The author recorded actual temperatures (°F) along with the temperatures (°F) that were predicted five days earlier. Results are listed below. Construct a 99% confidence interval estimate of the mean of the population of all “actual/forecast” differences. What does the result suggest about the accuracy of the forecast temperatures?
Date |
9/1 |
9/5 |
9/12 |
9/15 |
9/22 |
9/23 |
9/27 |
9/30 |
Actual High |
80 |
73 |
78 |
73 |
82 |
81 |
74 |
62 |
High Forecast Five Days Earlier |
80 |
79 |
79 |
78 |
73 |
79 |
70 |
69 |
Questions & Answers
QUESTION:
Problem 20BSC
In Exercises, assume that the paired sample data are simple random samples and that the differences have a distribution that is approximately normal.
Forecast and Actual Temperatures The author recorded actual temperatures (°F) along with the temperatures (°F) that were predicted five days earlier. Results are listed below. Construct a 99% confidence interval estimate of the mean of the population of all “actual/forecast” differences. What does the result suggest about the accuracy of the forecast temperatures?
Date |
9/1 |
9/5 |
9/12 |
9/15 |
9/22 |
9/23 |
9/27 |
9/30 |
Actual High |
80 |
73 |
78 |
73 |
82 |
81 |
74 |
62 |
High Forecast Five Days Earlier |
80 |
79 |
79 |
78 |
73 |
79 |
70 |
69 |
ANSWER:
Solution 20BSC