13. In a normal distribution with a mean of 69 and standard deviation of 15
what does a z-score of 2 indicates?
A It indicates that the score is equal to 39.
B. It indicates that the score is above the mean
C It indicates that the score is 39 less than the mean
D. It indicates that the difference between the score and the
inean is 39
14 Francis Leo and Romy who are best friends took a college entrance
examination. The rean score and standard deviation of the
examination
are 115 and 12, respectively. If Francis Leo and
Romy obtained 2 scores of 1.5 and 0.95 respectively, what was
their scores in the examination?
A 132 and 104
B. 133 and 104
C. 132 75 and 104
D. 133.75 and 103.6
15. The velocities of cars in express way are normally distributed with
a mean of 80 km/hr and standard deviation of 8 km/hr Jessie's
velocity has az-score of 2.5, what was his velocity?
A 100 km/hr
B. 105 km/hr
C, 110 km/hr
D. 115 km/hr​