During the 1990s the percentage of TV households viewing cable and satellite TV programs increased while the percentage viewing network affiliate shows (ABC, CBS, NBC, and FOX) generally decreased. The following table shows the primetime ratings for the network affiliates in the years 1993 and 1998. (In the table the rating percentage is defined as the percentage of TV households viewing a TV program in an average minute.)t Primetime Ratings for Network Affiliates x (year) y (rating percentage) 1993 40.2 1998 31.4 (a) Find the equation of the linear function whose graph passes through the two (x, y) points given in the table. (Round terms to two decimal places.) y = (b) Use a graphing utility to graph the line in part (a). Then use a TRACE or ZOOM feature to estimate what the rating percentage might have been for the year 2008. (Round your answer to one decimal place.) % (c) Compute the percentage error in the estimate in part (b), given that the actual figure for 2008, according to Nielsen Media Research, was 26.9. (Round your answer to one decimal place.) %

During the 1990s the percentage of TV households viewing cable and satellite TV programs increased while the percentage viewing network affiliate shows (ABC, CBS, NBC, and FOX) generally decreased. The following table shows the primetime ratings for the network affiliates in the years 1993 and 1998. (In the table the rating percentage is defined as the percentage of TV households viewing a TV program in an average minute.)t Primetime Ratings for Network Affiliates x (year) y (rating percentage) 1993 40.2 1998 31.4 (a) Find the equation of the linear function whose graph passes through the two (x, y) points given in the table. (Round terms to two decimal places.) y = (b) Use a graphing utility to graph the line in part (a). Then use a TRACE or ZOOM feature to estimate what the rating percentage might have been for the year 2008. (Round your answer to one decimal place.) % (c) Compute the percentage error in the estimate in part (b), given that the actual figure for 2008, according to Nielsen Media Research, was 26.9. (Round your answer to one decimal place.) %

Calculus: Early Transcendentals

8th Edition

ISBN:9781285741550

Author:James Stewart

Publisher:James Stewart

Chapter1: Functions And Models

Section: Chapter Questions

Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...

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Concept explainers

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.

Question

During the 1990s the percentage of TV households viewing cable and satellite TV programs increased while the percentage viewing network affiliate shows (ABC, CBS, NBC, and FOX) generally
decreased. The following table shows the primetime ratings for the network affiliates in the years 1993 and 1998. (In the table the rating percentage is defined as the percentage of TV households
viewing a TV program in an average minute.)†
Primetime Ratings for Network Affiliates
x (year)
y (rating percentage)
1993
40.2
1998
31.4
(a) Find the equation of the linear function whose graph passes through the two (x, y) points given in the table. (Round terms to two decimal places.)
y =
(b) Use a graphing utility to graph the line in part (a). Then use a TRACE or ZOOM feature to estimate what the rating percentage might have been for the year 2008. (Round your answer to
one decimal place.)
%
(c) Compute the percentage error in the estimate in part (b), given that the actual figure for 2008, according to Nielsen Media Research, was 26.9. (Round your answer to one decimal place.)

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