(c) the teacher wants to transform the test scores so that they have an approximately normal

distribution with a mean of 80 points and a standard deviation of 10 points. to do this, she will

use a formula in the form:

new score = a + b (old score)

find the values of a and b that the teacher should use to transform the distribution of test scores.

Step-by-step explanation:

Use formula

where

= new score

= old score

= the mean

= standard deviation

In your case,

Hence,

So,

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b