Asked by April
i have a hard time figuring out which formula's to use when solving problems. which would i use for the following:
if X is a normal random variable with mean u=60 and a Std Dev.=2 find:
A. p(x<58)
B. p(x>63)
C. p(57<X<64)
if X is a normal random variable with mean u=60 and a Std Dev.=2 find:
A. p(x<58)
B. p(x>63)
C. p(57<X<64)
Answers
Answered by
PsyDAG
Z = (X-μ)/SD
Look up Z values in table in back of statistics book labeled something like "areas under normal distribution."
I hope this helps. Thanks for asking.
Look up Z values in table in back of statistics book labeled something like "areas under normal distribution."
I hope this helps. Thanks for asking.
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