Asked by Mete
The mean price of purchases is $110 and the standard deviation = $12. What is the probability of a purchase exceeding $90?
I need help reviewing. Please give some input.
I need help reviewing. Please give some input.
Answers
Answered by
PsyDAG
Find your Z score = (x - μ)/SD, where x = desired value, μ = mean, and SD = standard deviation.
Look up this Z score in the table in the back ofyour statistics text labeled something like "areas under the normal distribution." You can decide which proportion answers your question.
I hope this helps. Thanks for asking.
Look up this Z score in the table in the back ofyour statistics text labeled something like "areas under the normal distribution." You can decide which proportion answers your question.
I hope this helps. Thanks for asking.
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.