If a normal distribution has a mean of 154 and a standard deviation of 15, what is the value that has a z-score of 2.2?
a. 166
b. 196
c. 187
d. 208

Option c. is correct

Step-by-step explanation:

The standard deviation is a measure of the amount of dispersion in a set of values.

Mean of a normal distribution (m) = 154

Standard deviation (s) = 15

z-score = 2.2

To find: value (x) that has a z-score of 2.2

z-score is given by

Put

Option c.is correct

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

no one knows lol

step-by-step explanation: