Given a normal distribution with (mean) ?= 50 and (standarddeviation) ? = 4, what is the probability that
NOTE: I'd like to learn how to do this in the shortestway possible on ti 84 plus calculator.
a) x>43
b) x<42
c) x>57.5
d) 42 e) x<40 or x>55
f) 5% of the values are less than what X value?
g) 60% of the values are between what two X values(symmetrically distributed around the mean)?
h) 85% of the values will be above what X value?
