Monthly high temperatures in a certain location have been tracked for several months. Let represent the month and the high temperature. Based on the data shown below, the correlation is not statistically significant. Still, you intend to predict the high temperature in month 22 using the sample data.
Use a 99% confidence interval to make the prediction. Enter your answer as an open-interval (i.e., parentheses) accurate to two decimal places (because the sample data are reported accurate to one decimal place).
99% C.I. =
Answer should be obtained without any preliminary rounding.
| x | y |
|---|---|
| 5 | -15.2 |
| 6 | 2.24 |
| 7 | 15.24 |
| 8 | 23.8 |
| 9 | 27.92 |
| 10 | 27.6 |
| 11 | 22.84 |
| 12 | 13.64 |
| 13 | -0 |
| 14 | -18.08 |
| 15 | -40.6 |
| 16 | -67.56 |
| 17 | -98.96 |
| 18 | -134.8 |
| 19 | -175.08 |
Use a 99% confidence interval to make the prediction. Enter your answer as an open-interval (i.e., parentheses) accurate to two decimal places (because the sample data are reported accurate to one decimal place).
99% C.I. =
Answer should be obtained without any preliminary rounding.