Question

Question 1.1. Suppose a normal distribution has a mean of 20 and a standard deviation of 4.

A value of 26 is how many standard deviations away from the mean?
(Points : 1)
1.5

0.5

0.5

1.5



Question 2.2. Suppose a normal distribution has a mean of 20 and a standard deviation of 4.

What is the z-score of a value that is 0.52 standard deviations less than the mean?
(Points : 1)
0.52

0.13

0.13

0.52

Answer 1

Question 3.3. Suppose the ages of cars driven by employees at a company are normally distributed with a mean of 8 years and a standard deviation of 3.2 years.

What is the z-score of a car that is 6 years old?
(Points : 1)
1.6

0.625

0.625

1.6

Answer 2

@undeadknight26

Answer 3

@triciaal

Answer 4

i don't know

Answer 5

@SolomonZelman @mathstudent55 someone jeez man i need help