In: Math
assume a normal distribution with a mean of 65 and standard deviation of 14 find P(56<X less than or equal to 68)
Solution:
Given: X ~ Normal
Find:
Find z score for x = 56 and for x = 68
Thus we get:
Look in z table for z = 0.2 and 0.01 as well as for z = -0.6 and 0.04 and find corresponding area.
P( Z< 0.21 ) = 0.5832
and
P( Z <-0.64) = 0.2611
Thus