Professor elderman has given the same multiple-choice final exam in his principles of microeconomics class for many years. after examining his records from the past 10 years, he finds that the scores have a mean of 76 and a standard deviation of 12. what is the probability that a class of 15 students will have a class average greater than 70 on professor elderman’s final exam? you answered 0.6915 correct answer cannot be determined. 0.0262 0.9738

0.9738

Step-by-step explanation:

We assume that the scores follows a normal distribution.

Let denotes the class average .

As per given we have,

Sample size : n= 12

The probability that a class of 15 students will have a class average greater than 70 on Professor Elderman’s final exam will be :

Hence, the correct answer = 0.9738

the answer would be d.

step-by-step explanation:

move all variables to the left side and all constants to the right side

(x−3)^2+(y−1)^2=16

this is the form of a circle. use this form to determine the center and radius of the circle.

( x − h ) 2 + ( y − k ) 2 = r 2

match the values in this circle to those of the standard form. the variable   r   represents the radius of the circle,   h   represents the x-offset from the origin, and   k   represents the y-offset from origin.

r = 4

h = 3

k = 1

the center of the circle is found at   ( h , k ) .

center:   ( 3 , 1 )

these values represent the important values for graphing and analyzing a circle.

center:   ( 3 , 1 ).

radius:   4

what's the question here?