Question
the average temp of the lake is 64.2 degrees and the standard deviation is 3.2. Assume the cariable is normally distributed. For a randomly selected day find the probabliity that the temp will be above 62 degrees
Answers
MathGuru
Use z-scores:
z = (x - mean)/sd
x = 62
mean = 64.2
sd = 3.2
Once you have the z-score, check a z-table for the probability.
z = (x - mean)/sd
x = 62
mean = 64.2
sd = 3.2
Once you have the z-score, check a z-table for the probability.