Question 1

Game Winnings & Education
An ardent fan of television game shows has observed that, in general, the more educated the contestant, the less money he or she wins.To test her belief she gathers data about the last eight winners of her favorite game show.She records their winnings in dollars and the number of years of education.The results are as follows.
 
-{Game Winnings & Education Narrative} Predict with 95% confidence the winnings of a contestant who has 10 years of education.

Accepted Answer

The answer of Game Winnings & Education
An ardent fan of...

Question 2

Wayne Newton Concert
At a recent Wayne Newton concert, a survey was conducted that asked a random sample of 20 people their age and how many concerts they have attended since the first of the year.The following data were collected:
  An Excel output follows: 
-{Oil Quality and Price Narrative} Which interval in the previous two questions is narrower: the confidence interval estimate of the expected value of y or the prediction interval for the same given value of x (10 years) and same confidence level? Why?

Accepted Answer

The answer of Wayne Newton Concert
At a recent Wayne Newton...

Question 3

Movie Revenues
A financier whose specialty is investing in movie productions has observed that, in general, movies with "big-name" stars seem to generate more revenue than those movies whose stars are less well known.To examine his belief he records the gross revenue and the payment (in $ millions) given to the two highest-paid performers in the movie for ten recently released movies.
 
-{Cost of Books Narrative} Predict with 90% confidence the selling price of a book with 900 pages.

Accepted Answer

The answer of Movie Revenues
A financier whose specialty is investing...

Question 4

Wayne Newton Concert
At a recent Wayne Newton concert, a survey was conducted that asked a random sample of 20 people their age and how many concerts they have attended since the first of the year.The following data were collected:
  An Excel output follows: 
-{Wayne Newton Concert Narrative} Which interval in the previous two questions is narrower: the confidence interval estimate of the expected value of y or the prediction interval for the same given value of x (10 years) and same confidence level? Why?

Accepted Answer

The answer of Wayne Newton Concert
At a recent Wayne Newton...

Question 5

Game Winnings & Education
An ardent fan of television game shows has observed that, in general, the more educated the contestant, the less money he or she wins.To test her belief she gathers data about the last eight winners of her favorite game show.She records their winnings in dollars and the number of years of education.The results are as follows.
 
-{Game Winnings & Education Narrative} Estimate with 95% confidence the average winnings of all contestants who have 15 years of education.

Accepted Answer

The answer of Game Winnings & Education
An ardent fan of...

Question 6

Movie Revenues
A financier whose specialty is investing in movie productions has observed that, in general, movies with "big-name" stars seem to generate more revenue than those movies whose stars are less well known.To examine his belief he records the gross revenue and the payment (in $ millions) given to the two highest-paid performers in the movie for ten recently released movies.
 
-{Movie Revenues Narrative} Predict with 95% confidence the gross revenue of a movie whose top two stars earn $5.0 million.

Accepted Answer

The answer of Movie Revenues
A financier whose specialty is investing...

Question 7

Movie Revenues
A financier whose specialty is investing in movie productions has observed that, in general, movies with "big-name" stars seem to generate more revenue than those movies whose stars are less well known.To examine his belief he records the gross revenue and the payment (in $ millions) given to the two highest-paid performers in the movie for ten recently released movies.
 
-{Movie Revenues Narrative} Estimate with 95% confidence the average gross revenue of a movie whose top two stars earn $5.0 million.

Accepted Answer

The answer of Movie Revenues
A financier whose specialty is investing...

Question 8

Game Winnings & Education
An ardent fan of television game shows has observed that, in general, the more educated the contestant, the less money he or she wins.To test her belief she gathers data about the last eight winners of her favorite game show.She records their winnings in dollars and the number of years of education.The results are as follows.
 
-{Game Winnings & Education Narrative} Estimate with 95% confidence the average winnings of all contestants who have 10 years of education.

Accepted Answer

The answer of Game Winnings & Education
An ardent fan of...

Question 9

Movie Revenues
A financier whose specialty is investing in movie productions has observed that, in general, movies with "big-name" stars seem to generate more revenue than those movies whose stars are less well known.To examine his belief he records the gross revenue and the payment (in $ millions) given to the two highest-paid performers in the movie for ten recently released movies.
 
-{Cost of Books Narrative} Which interval in the previous question is narrower: the confidence interval estimate of the expected value of y or the prediction interval for the same given value of x (10 years) and same confidence level? Why?

Accepted Answer

The answer of Movie Revenues
A financier whose specialty is investing...

Question 10

Wayne Newton Concert
At a recent Wayne Newton concert, a survey was conducted that asked a random sample of 20 people their age and how many concerts they have attended since the first of the year.The following data were collected:
  An Excel output follows: 
-{Wayne Newton Concert Narrative} Estimate with 95% confidence the average number of concerts attended by all 45 year-old individuals.

Accepted Answer

The answer of Wayne Newton Concert
At a recent Wayne Newton...

Question 11

Graphically, a confidence interval for the mean of y is represented as two ____________________ lines.

Accepted Answer

The answer of Graphically, a confidence interval for the mean...

Question 12

Game Winnings & Education
An ardent fan of television game shows has observed that, in general, the more educated the contestant, the less money he or she wins.To test her belief she gathers data about the last eight winners of her favorite game show.She records their winnings in dollars and the number of years of education.The results are as follows.
 
-{Game Winnings & Education Narrative} Predict with 95% confidence the winnings of a contestant who has 15 years of education.

Accepted Answer

The answer of Game Winnings & Education
An ardent fan of...

Question 13

Wayne Newton Concert
At a recent Wayne Newton concert, a survey was conducted that asked a random sample of 20 people their age and how many concerts they have attended since the first of the year.The following data were collected:
  An Excel output follows: 
-{Oil Quality and Price Narrative} Estimate with 95% confidence the average oil price per barrel for an API degree of 35.

Accepted Answer

The answer of Wayne Newton Concert
At a recent Wayne Newton...

Question 14

Movie Revenues
A financier whose specialty is investing in movie productions has observed that, in general, movies with "big-name" stars seem to generate more revenue than those movies whose stars are less well known.To examine his belief he records the gross revenue and the payment (in $ millions) given to the two highest-paid performers in the movie for ten recently released movies.
 
-{Cost of Books Narrative} Estimate with 90% confidence the average selling price of all books with 900 pages.

Accepted Answer

The answer of Movie Revenues
A financier whose specialty is investing...

Question 15

Wayne Newton Concert
At a recent Wayne Newton concert, a survey was conducted that asked a random sample of 20 people their age and how many concerts they have attended since the first of the year.The following data were collected:
  An Excel output follows: 
-{Oil Quality and Price Narrative} Predict with 95% confidence the oil price per barrel for an API degree of 35.

Accepted Answer

The answer of Wayne Newton Concert
At a recent Wayne Newton...

Question 16

Movie Revenues
A financier whose specialty is investing in movie productions has observed that, in general, movies with "big-name" stars seem to generate more revenue than those movies whose stars are less well known.To examine his belief he records the gross revenue and the payment (in $ millions) given to the two highest-paid performers in the movie for ten recently released movies.
 
-{Movie Revenues Narrative} Which interval in the previous two questions is narrower: the confidence interval estimate of the expected value of y or the prediction interval for the same given value of x (10 years) and same confidence level? Why?

Accepted Answer

The answer of Movie Revenues
A financier whose specialty is investing...

Question 17

Wayne Newton Concert
At a recent Wayne Newton concert, a survey was conducted that asked a random sample of 20 people their age and how many concerts they have attended since the first of the year.The following data were collected:
  An Excel output follows: 
-{Wayne Newton Concert Narrative} Predict with 95% confidence the number of concerts attended by a 45 year-old individual.

Accepted Answer

The answer of Wayne Newton Concert
At a recent Wayne Newton...

Question 18

A medical statistician wanted to examine the relationship between the amount of sunshine (x) and incidence of skin discolorations (y).As an experiment he found the number of skin discolorations detected per 100,000 of population and the average daily sunshine in eight counties around the country.These data are shown below.
  Predict with 95% confidence the skin discolorations per 100,000 in a county with a daily average of 6.5 hours of sunshine.

Accepted Answer

The answer of A medical statistician wanted to examine the...

Quiz 16: Simple Linear Regression and Correlation

Graphically, a confidence interval for the mean of y is represented as two ____________________ lines.