Probability & Statistics_Continuous Distributions_5/3

Multiple Choice

The number of orange Skittles in a bag. 

• Discrete
• Continuous

Multiple Choice

The number of suitcases lost by airlines. 

• Discrete
• Continuous

Multiple Choice

The time it takes for a light bulb to burn out. 

• Discrete
• Continuous

Multiple Choice

While driving to Florida, Sophia averaged 72 m.p.h. 

• Discrete
• Continuous

Open Ended

Use the density graph shown here to answer the following questions:

1) What is P(X>3)?

2) What is P(X<3)?

Multiple Choice

What shape is a normal distribution curve?

• Half curve
• Round curve
• Bell curve
• Square curve

Multiple Choice

What is the the total area under the standard normal distribution curve?

• 100
• 25
• .5
• 1

Multiple Choice

Which is NOT true about the normal distribution curve?

• It is bell-shaped.

• The mean, median, and mode are approximately equal

• The smaller the standard deviation, the less spread in the curve.

• It is asymmetrical.

Multiple Choice

According to the empirical rule, what percentage of data falls within 1 standard deviation? 

• 25%
• 68%
• 95%
• 99.7%

Multiple Choice

According to the empirical rule, how much of the data falls within 3 standard deviations? 

• 25%
• 68%
• 95%
• 99.7%

Multiple Choice

1.  Which best describes the shaded part of this normal distribution graph?  

• All data that is one or higher.
• All data that is one or more standard deviations above the mean.
• All data that is between 1 and 3.
• All data that is above the mean.

Multiple Choice

What is the Normal Range (68%) of the annual precipitation for Phoenix, if the average is 29 with a standard deviation of 3?

• 26-32
• 3-29
• 26-29
• 39-32

Multiple Choice

Use the following information and the Empirical Rule to estimate the answer.

The ages of golfers are normally distributed, with a mean of 38 and a standard deviation of 4.

Find the percentage of golfers that are between 30 and 46 years old.

• 68%

• 94%

• 95%

• 99.7%

Multiple Choice

Use the following information and the Empirical Rule to estimate the answer.

The ages of golfers are normally distributed, with a mean of 38 and a standard deviation of 4.

There are 500 golf members at the Mathy Country Club. How many are younger than 34?

• 16

• 80

• 100

• 150

Multiple Choice

The shelf life of a particular dairy product is normally distributed with a mean of 12 days and a standard deviation of 3 days.

About what percent of the products last between 12 and 15 days?

• 68%
• 34%
• 16%
• 2.5%

Multiple Choice

Given a mean of 75 and a standard deviation of 7, what percentage of scores are above 82?

• 34%

• 81.5%

• 16%

• 2.5%

Multiple Choice

Given a mean of 75 and a standard deviation of 7, how many students out of 500 would score between 68 and 82

• 11

• 2

• 340

• 498

If you finish early....

• Complete any remaining Unit 9 Assignments (9.4.1 Practice or 9.4.4 Test)

• Complete 10.3.1 Study & 10.3.3 Continuous Variable Quiz

• Complete 10.2.1 Study & 10.2.3 Normal Distribution Quiz​

• Finish any missing/late work.​

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