In an article in the Journal of Advertising, Weinberger and Spotts compare the use of humor in television ads in the United States and the United Kingdom. They found that a substantially greater percentage of U.K. ads use humor.
(a) Suppose that a random sample of 387 television ads in the United Kingdom reveals that 130 of these ads use humor. Find a point estimate of and a 95 percent confidence interval for the proportion of all U.K. television ads that use humor. (Round your answers to 3 decimal places.)
| pˆp^ = |
| The 95 percent confidence interval is [,]. |
(b) Suppose a random sample of 534 television ads in the United States reveals that 114 of these ads use humor. Find a point estimate of and a 95 percent confidence interval for the proportion of all U.S. television ads that use humor. (Round your answers to 3 decimal places.)
| pˆp^ = |
| The 95 percent confidence interval is [,]. |
(c) Do the confidence intervals you computed in
parts a and b suggest that a greater percentage
of U.K. ads use humor?
(Click to select)NoYes , the U.K. 95 percent confidence interval is
(Click to select)abovenot above the maximum value
in the confidence interval for the U.S.
In: Math
In an article in the Journal of Advertising, Weinberger and Spotts compare the use of humor in television ads in the United States and the United Kingdom. They found that a substantially greater percentage of U.K. ads use humor.
(a) Suppose that a random sample of 387
television ads in the United Kingdom reveals that 131 of these ads
use humor. Find a point estimate of and a 95 percent confidence
interval for the proportion of all U.K. television ads that use
humor. (Round your answers to 3 decimal
places.)
| pˆp^ = |
| The 95 percent confidence interval is [,]. |
(b) Suppose a random sample of 493 television
ads in the United States reveals that 134 of these ads use humor.
Find a point estimate of and a 95 percent confidence interval for
the proportion of all U.S. television ads that use humor.
(Round your answers to 3 decimal
places.)
| pˆp^ = |
| The 95 percent confidence interval is [,]. |
(c) Do the confidence intervals you computed in
parts a and b suggest that a greater percentage
of U.K. ads use humor?
(Click to select)YesNo , the U.K. 95 percent confidence interval is
(Click to select)not aboveabove the maximum value
in the confidence interval for the U.S.
In: Math
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Please hurry
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