Homework SourseThe time it takes Jessica to bicycle to school is normally d
The time it takes Jessica to bicycle to school is normally distributed with mean 15 minutes and variance 4. Jessica has to be at school at 8:00 am. Suppose you saw her at class, and she said it took her 23 minutes to get to school that day. Which of the following is a reasonable inference or conclusion?
| a. Twenty-three minutes to school is not an unusually long commute time. |
| b. A commuting time of 23 minutes is highly unusual or atypical. |
| c. The distribution of commute times MAY NOT be normal with mean 15 minutes and standard deviation 2 minutes. |
| d. Both (b) and (c) are feasible conclusions. |
| e. Both (a) and (c) are feasible conclusions. |
Solution
d. Both (b) and (c) are feasible conclusions.
