In: Statistics and Probability
Solution :
Given that ,
mean =
= 70
standard deviation =
= 12
n = 16
= 70
=
/
n = /
= 12/
16
= 3
P(
> 75) = 1 - P(
<75 )
= 1 - P[(
-
) /
< (75-70) /3 ]
= 1 - P(z <1.67 )
= 1 - 0.9525 = 0.0475
Probability = 0.0475