Normal Distributions Probability

Normal Distributions Probability

12th Grade

15 Qs

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Normal Distributions Probability

Normal Distributions Probability

Assessment

Quiz

Mathematics

12th Grade

Practice Problem

Hard

Created by

Anthony Clark

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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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.

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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

25%

68%

95%

99.7%

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following graphs shows a normal curve?

Media Image
Media Image
Media Image
Media Image

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Where can we locate the mean in the normal curve?

to the left portion

to the right portion

at the center

on the z - axis

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is a disadvantage of the Empirical Rule?

There is no result for 3 standard deviations.

It is very conservative.

There is no result for 1 standard deviation.

The data has to be approximately normal.

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The mean life of a tire is 30,000 km. The standard deviation is 2000 km.

Then, 68% of all tires will have a life between ___________ km and __________ km.

 28,000 km and 32,000 km.

24,000 km and 34,000 km.

26,000 km and 34,000 km.

27,000 km and 31,000 km.

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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 proportion of golfers that are older than 42.

13.5%

16%

50%

85%

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