This post is to check understanding of normal distributions when students are required to standardise. Note that the answers given are from using the normal table to look up P(Z < z), not a calculator method.
a) The student mixed their units and so ended up with an incorrect z value
b) Correct answer
c) Student used the standardised value as the probability
d) Student made an error in the standardising formula (rather than X – μ, student did μ – X)
e) Student looked up the value given (1.45) rather than standardising
In case you wondered; this is for a different class 😉