Statistics Chapter 6

Statistics Chapter 6

12th Grade

19 Qs

quiz-placeholder

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Statistics Chapter 6

Statistics Chapter 6

Assessment

Quiz

Mathematics

12th Grade

Practice Problem

Hard

Created by

Anthony Clark

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19 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

How would you interpret the expected value in number 3?

The maximum number of cars for the household is Exp(C).

The average number of cars for the household is Exp(C).

If we randomly select many households, the average number of cars per household will be approximately by Exp(C).

If we randomly select many households, the average number of cars per household will vary approximately by Exp(C).

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The probability that an American household will have at most 3 cars is...

0.93

0.20

0.13

0.07

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The probability that an American household will have at least 2 cars is...

0.55

0.35

0.45

0.93

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What's the expected number of cars in a randomly selected American household?

1.00

1.75

1.84

2.00

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Choose the statistical question:

What time did you wake up this morning?

What time do 12th graders wake up each morning during the school week?

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The standard deviation of X is ox = 1.08. If many households were selected at random, which of the following would be the best interpretation of the value 1.08?

The mean number of cars would be about 1.08.

If we randomly selected many households, the number of cars would typically vary be about 1.08 cars from the mean.

The number of cars would be at most 1.08 from the mean.

The number of cars would be within 1.08 from the mean about 68% of the time.

The mean number of cars would be about 1.08 from the expected value.

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The number of calories in a 1-ounce serving of a certain breakfast cereal is a random variable with mean 110 and standard deviation 10. The number of calories in a cup of whole milk is a random variable with mean 140 and standard deviation 12. For breakfast, you eat 1 ounce of the cereal and 1/2 cup of whole milk. Let T be the random variable that represents the total number of calories in this breakfast. The mean of T is...

110

140

180

195

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