Chapter 5

Question 1

Continuous random variable has a distribution with a graph that’s symmetric and bell-shaped

Answer 1

Normal distribution

Question 2

Continuous random variable has a uniform

Answer 2

Uniform distribution

Question 3

Graph of continuous probability distribution

Answer 3

Density curve

Question 4

The total area for density curve should equal

Answer 4

1

Question 5

The curve can’t fall below the

Answer 5

x-axis

Question 6

Standard normal distribution has ….. mean ana…..standard deviation

Answer 6

(0 , 1)

Question 7

• Distances along the horizontal scale
• Negative when it’s located in the left of the mean

Answer 7

Z score

Question 8

• Regions under the normal curve
• Positive or zero values but they’re never negative

Answer 8

Areas

Question 9

Uniform distribution’s values are spread evenly over the range of probabilities to form a ……….. shape

Answer 9

Rectangular

Question 10

The body of table A-2 :

Answer 10

Area

Question 11

The leftmost column and top row of table A-2:

Answer 11

Z score

Question 12

When the z score is greater….

Answer 12

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