Answer:
2
Explanation:
mean = 67.6
Explanation:
The height of the soldier are normally distributed. If 11.51% of the soldiers are taller than 70.4 inches
and 9.68% are shorter than 65.4 inches.
Find the mean and Standard Deviation for the data of height of soldiers.
[Given Zval(.8849)=1.2 and Zval (.9032)=1.3]
11.51 % are taller than 70.4 inches
=> 88.49% are smaller than 70.4
z score for .8849 = 1.2
z score =( value - mean)/standard deviation
1.2 =( 70.4 - mean)sd
1.2sd = 70.4 - mean
9.68% are shorter than 65.4 inches
90.32% are larger than 65.4 inches
-1.3 = ( 65.4 - mean)/sd
-1.3sd = 65.4 - mean
2.5sd = 5
sd = 2
1.2*2 = 70 - mean
mean = 67.6