Chapter 7 Multiple Choice Practice

Chapter 7 Multiple Choice Practice

11th - 12th Grade

8 Qs

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Chapter 7 Multiple Choice Practice

Chapter 7 Multiple Choice Practice

Assessment

Quiz

Mathematics

11th - 12th Grade

Practice Problem

Hard

CCSS
HSS.IC.B.3

Standards-aligned

Used 35+ times

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8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

According to DuPont 2012 Global Automotive Color Popularity Report, 23% of all cars manufactured in 2012 were white.  In a random sample of 100 cars parked in long-term parking at Philadelphia International Airport, 19% of the cars were white.  Which of the following statements is true?

19% and 23% are parameters, 100 is a statistic.
23% is a parameter, 19% is a statistic
23% is a statistic, 19% is a parameter
19%, 23%, and 100 are all statistics

Tags

CCSS.HSS.IC.B.3

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

The best statistic for estimating a parameter has which of the following characteristics?

Low bias, high variability
High bias, high variability
Low bias.  Since a statistic should always equal the parameter it is estimating, there should be no variability
Low bias, low variability

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Which of the following best describes a sampling distribution?

A probability distribution that describes the relative likelihood of all possible values of a statistic
The distribution of all values of a statistic found in a large number of simulated samples of size n
The set of all values of a variable in a large number of samples of size n
The distribution of parameter values in all possible samples of size n

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

In a large population of adults, the mean IQ is 112 with a standard deviation of 20. Suppose 200adults are randomly selected for a market research campaign. The sampling distribution of thesample mean IQ is

exactly Normal, mean 112, standard deviation 20
approximately Normal, mean 112, standard deviation 0.1
approximately Normal, mean 112, standard deviation 1.414
exactly Normal, mean 112, standard deviation 1.414

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Suppose you are sampling from a distribution that is strongly skewed left. Which of the following statements about the sampling distribution of the sample mean is true?

As the sample size increases, the shape of the sampling distribution gets closer and closer to a Normal distribution
As the sample size increases, the shape of the sampling distribution gets closer and closer to the shape of the population distribution
As the sample size increases, the mean of the sampling distribution gets closer to the population mean
Regardless of sample size, the shape of the sampling distribution is similar to the shape of the population distribution

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

In a study of the effects of acid rain, a random sample of 100 trees from a particular forest is

examined. Forty percent of these show some signs of damage. Which of the following statements

is correct?

The sampling distribution of the sample proportion of damaged trees is approximately Normal.

If we took another random sample of trees, we would find that 40% of these would show some

signs of damage.

If a sample of 1000 trees was examined, the variability of the sampling distribution of the sample proportion would be larger than in a sample of 100 trees.

None of the above statements is correct.

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Which of the following statements is/are true when taking an SRS from a large population?

I. The sampling distribution of x̄ has standard deviation σ/√n even if the population is not Normally distributed.

II. The sampling distribution of x̄ is Normal if the population has a Normal distribution.

III. When n is large, the sampling distribution of x̄ is approximately Normal even if the population is not Normally distributed.

I and II

I and III

II and III

I, II, and III

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