What does this formula do?

Checks if the samples are independent

A statistic is biased if...

The mean of the sampling distribution is NOT equal to the true value of the parameter

the value of the statistic from any sample is NOT equal to the parameter

The value of the statistic from any sample IS equal to the parameter

The mean of the sampling distribution IS equal to the vali

A statistic is unbiased if...

The mean of the sampling distribution IS equal to the value of the population mean

the value of the statistic from any sample is NOT equal to the parameter

The value of the statistic from any sample IS equal to the parameter

The mean of the sampling distribution is NOT equal to the true value of the parameter

The population of number of presents each child in a family gets on Christmas is strongly skewed right. The central limit theorem states...

the mean number of gifts for a large number of sample children has a distribution that is close to normal

the mean number of gifts for a large number of sample children has a strong right skew shape.

as we look at more and more children the mean number of gifts will be closer to the true mean

the mean number of gifts for any number of children will be approximately normal

The deer population in St. Johns County is known to have a mean height of 3 feet and a standard deviation of .5 feet. We choose 16 deer. What is NOT true about the sampling distribution

we know nothing about the shape

A simple random sample of 1000 Americans found that 62% were satisfied with the service provided by the dealer from which they bought their car. A simple random sample of 1000 Canadians found that 59% were satisfied with the service provided by the dealer from which they bought their car. The sampling variability associated with these statistics i

not exactly the same, but very close.

much smaller for the sample of Canadians because the population of Canada is much smaller than that of the United States, hence the sample is a larger proportion of the population.

smaller for the sample of Canadians because the percent satisfied was smaller than that for the Americans.

larger for the Canadians because Canadian citizens are more widely dispersed throughout the country than are citizens in the United States, hence they have more variable views.

Chapter 7 Sampling Distribution

Authored by Muhammad Btaine

Mathematics

12th Grade

CCSS covered

Used 26+ times

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18 questions

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MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The Gallup Poll asked a random sample of 1785 adults whether they attended church during the past week. Let p-hat be the proportion of people in the sample who attended church. A newspaper report claims that 40% of all U.S. adults went to church last week. Suppose this claim is true.
What is the mean of the sampling distribution of p-hat?

0.4

0.44

0.56

0.6

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

CCSS.HSS.MD.A.2

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

28% of all Woodrow students believe Monday will be snow day. You take a sample of 50 students and find that 15 of them believe Monday will be a snow day. What does 50 represent?

phat

standard deviation

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What happens to the shape of a sampling distribution of sample means as n increases?

It becomes narrower and bimodal.

It becomes narrower and more normal.

It becomes wider and skewed right.

It becomes wider and more normal.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

These symbols represent the mean and standard deviation for which of the following distributions?

The Population

The Sample

The Sampling Distribution

Tags

CCSS.HSS.ID.A.4

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

These symbols represent the mean and standard deviation for which of the following distributions?

The Population

The Sample

The Sampling Distribution

Tags

CCSS.HSS.ID.A.4

CCSS.HSS.ID.A.2

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

These symbols represent the mean and standard deviation for which of the following distributions?

The Population

The Sample

The Sampling Distribution

Tags

CCSS.HSS.ID.A.4

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The mean and standard deviation of a population are 200 and 20, respectively. Sample size is 25.
What is the standard deviation of the sampling distribution?

200

Tags

CCSS.HSS.ID.A.4

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Chapter 7 Sampling Distribution

28% of all Woodrow students believe Monday will be snow day. You take a sample of 50 students and find that 15 of them believe Monday will be a snow day. What does 50 represent?

What happens to the shape of a sampling distribution of sample means as n increases?

These symbols represent the mean and standard deviation for which of the following distributions?

These symbols represent the mean and standard deviation for which of the following distributions?

These symbols represent the mean and standard deviation for which of the following distributions?

The mean and standard deviation of a population are 200 and 20, respectively. Sample size is 25. What is the standard deviation of the sampling distribution?

What is the standard deviation of the distribution?

What does this formula do?

A statistic is biased if...

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The mean and standard deviation of a population are 200 and 20, respectively. Sample size is 25.
What is the standard deviation of the sampling distribution?