If a distribution of test scores is normal with a mean of 78 and a standard deviation of 11, calculate the z-score for the following scores x z-score 60 70 80 90 60 65 70 80 99 89 75 make sure to round up your answers to two digits after the decimal point.

Step-by-step explanation:

As we know z- score is defined by the formula

Mean of the scores is given as 78 and standard deviation 11.

Now for x = 60

For x = 70

=-0.73

For x = 80

z = 0.18

For x = 90

z = 1.09

For x = 60

z = -1.64

For x = 65

z = -1.18

For x = 70

z = -0.73

For x = 80

z = 0.18

For x = 99

z = 1.91

For x = 89

z = 1

For x = 75

z = -0.27

-232

step-by-step explanation:

12

step-by-step explanation:

a triangle's   full angle is 180 degrees so 180 - 156 = 24. 24/2=12