A normal distribution of scores has a standard deviation of 10. Find the z-scores corresponding to each of the following values:
a) A score of 60, where the mean score of the sample data values is 40.

Z-score is 2

Step-by-step explanation:

a) N (40, 10^2)

Use Z-score formula (can be found in the internet, with miu and sigma symbols)

three-fourths of an hour

36÷48=0.75

0.75=

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