Asked by Pat
The time it takes Jessica to bicycle to school is normally distributed with an average of a third of an hour and a variance of 9 minutes. Jessica has to be at school at 8:15 am. What time should she leave the house so she will be late on 5% of the time?
Answers
Answered by
PsyDAG
Z = (score-mean)/SD
1/3 hour = 20 minutes
Variance = SD^2
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion .05 and insert its Z score in the equation above with the other data. Find difference from 8:15.
1/3 hour = 20 minutes
Variance = SD^2
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion .05 and insert its Z score in the equation above with the other data. Find difference from 8:15.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.