Asked by April
If X is a normal random variable with mean 60, and a standard deviation of 2, find:
A: P (X<58)
B: P(X>63)
C: P(57<X<64)
A: P (X<58)
B: P(X>63)
C: P(57<X<64)
Answers
Answered by
PsyDAG
Calculate Z scores for the various values.
Z = (X - μ )/SD
Look up Z scores in table in the back of your statistics book labeled something like "areas under normal distribution" to find the probabilities.
I hope this helps. Thanks for asking.
Z = (X - μ )/SD
Look up Z scores in table in the back of your statistics book labeled something like "areas under normal distribution" to find the probabilities.
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.