Question
During September, the average temperature of Laurel Lake is 64.2º and the standard deviation is 3.2º. Assume the variable is normally distributed. For a randomly selected day, find the probability that the temperature will be
a. Above 62º
b. Below 67º
c. Between 65º and 68º
a. Above 62º
b. Below 67º
c. Between 65º and 68º
Answers
PsyDAG
Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities related to the Z scores.
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities related to the Z scores.
Penny
a. .2451
b. .8051
c. .3897
b. .8051
c. .3897