Module Sampling Distributions
Sampling Distributions Checkpoint 1
Step 1 of 1
Question 1 of 6 Points: 10 out of 10
In June 2005, a survey was conducted in which a random sample of 1,464 U.S. adults was asked
the following question: "In 1973 the Roe versus Wade decision established a woman's
constitutional right to an abortion, at least in the first three months of pregnancy. Would you like
to see the Supreme Court completely overturn its Roe versus Wade decision, or not?"
The results were: Yes—30%, No—63%, Unsure—7% (Source: www.Pollingreport.com)
Which of the following is true?
30%, 63%, and 7% are all parameters.
30%, 63%, and 7% are all statistics.
If another random sample of size 1,464 U.S. adults were to be chosen, we would expect to get
the exact same distribution of answers.
Both (A) and (C) are correct.
Both (B) and (C) are correct.
Good job! Since the survey results are obtained from the sample, these are all statistics. Due to
sampling variability, if we were to take a different sample of the same size we would not expect
to get the same sample results.
The next three questions refer to the following information:
A social scientist wishes to conduct a survey. She plans to ask a yes/no question to a random
sample from the U.S. adult population. One proposal is to select 100 people; another proposal is
to select 900 people.
Question 2 of 6 Points: 10 out of 10
Which of the following is true regarding the sample proportion p-hat, of "yes" responses?
The sample proportion from the sample of 900 is more likely to be close to the true population
proportion, p.
The sample proportion from sample of 100 is more likely to be close to the true population
proportion, p.
The sample proportion in either proposal is equally likely to be close to the true population
proportion, p, since the sampling is random.
It is impossible to say one way or the other.
This study source was downloaded by 100000836546216 from CourseHero.com on 03-09-2022 07:47:00 GMT -06:00
https://www.coursehero.com/file/27812796/Sampling-Distributions-Checkpoint-1pdf/
Sampling Distributions Checkpoint 1
Step 1 of 1
Question 1 of 6 Points: 10 out of 10
In June 2005, a survey was conducted in which a random sample of 1,464 U.S. adults was asked
the following question: "In 1973 the Roe versus Wade decision established a woman's
constitutional right to an abortion, at least in the first three months of pregnancy. Would you like
to see the Supreme Court completely overturn its Roe versus Wade decision, or not?"
The results were: Yes—30%, No—63%, Unsure—7% (Source: www.Pollingreport.com)
Which of the following is true?
30%, 63%, and 7% are all parameters.
30%, 63%, and 7% are all statistics.
If another random sample of size 1,464 U.S. adults were to be chosen, we would expect to get
the exact same distribution of answers.
Both (A) and (C) are correct.
Both (B) and (C) are correct.
Good job! Since the survey results are obtained from the sample, these are all statistics. Due to
sampling variability, if we were to take a different sample of the same size we would not expect
to get the same sample results.
The next three questions refer to the following information:
A social scientist wishes to conduct a survey. She plans to ask a yes/no question to a random
sample from the U.S. adult population. One proposal is to select 100 people; another proposal is
to select 900 people.
Question 2 of 6 Points: 10 out of 10
Which of the following is true regarding the sample proportion p-hat, of "yes" responses?
The sample proportion from the sample of 900 is more likely to be close to the true population
proportion, p.
The sample proportion from sample of 100 is more likely to be close to the true population
proportion, p.
The sample proportion in either proposal is equally likely to be close to the true population
proportion, p, since the sampling is random.
It is impossible to say one way or the other.
This study source was downloaded by 100000836546216 from CourseHero.com on 03-09-2022 07:47:00 GMT -06:00
https://www.coursehero.com/file/27812796/Sampling-Distributions-Checkpoint-1pdf/
