Chapter 6

Question 1

Random variable

Answer 1

Numerical measurement of the outcome of a random phenomenon.

Question 2

Probability distribution

Answer 2

Specifies a random variables possible values and probabilties

Question 3

Expected value

Answer 3

The mean of the probability distribution of a random
variable.

Question 4

Normal distribution

Answer 4

Symmetric, bell-shaped
continuous probability distribution

Question 5

Empirical rule

Answer 5

1 SD= 0.68
2 SD= 0.95
3 SD= 0.977

Question 6

Standard normal distribution

Answer 6

The z-score can be used to convert and Normal
Distribution N(𝜇, 𝜎) to this