In an article in Marketing Science, Silk and Berndt investigate the output of advertising agencies. They describe ad agency output by finding the shares of dollar billing volume coming from various media categories such as network television, spot television, newspapers, radio, and so forth. Suppose that from a random sample of 39O U.S. advertising agencies, 115 gives a percentage share of billing volume from spot television commercials. Calculate a 90 percent confidence interval for the percentage share of billing volume from spot television commercials for the population of all U.S. advertising agencies.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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In an article in Marketing Science, Silk and Berndt investigate the output of advertising agencies. They describe ad agency output by finding the
shares of dollar billing volume coming from various media categories such as network television, spot television, newspapers, radio, and so forth.
Suppose that from a random sample of 390 U.S. advertising agencies, 115 gives a percentage share of billing volume from spot television
commercials. Calculate a 90 percent confidence interval for the percentage share of billing volume from spot television commercials for the
population of all U.S. advertising agencies.
Multiple Choice
[0.2900,0.3277)
[0.2523,0.0377)
( Prev
9 of 18
Next >
........*..
Transcribed Image Text:In an article in Marketing Science, Silk and Berndt investigate the output of advertising agencies. They describe ad agency output by finding the shares of dollar billing volume coming from various media categories such as network television, spot television, newspapers, radio, and so forth. Suppose that from a random sample of 390 U.S. advertising agencies, 115 gives a percentage share of billing volume from spot television commercials. Calculate a 90 percent confidence interval for the percentage share of billing volume from spot television commercials for the population of all U.S. advertising agencies. Multiple Choice [0.2900,0.3277) [0.2523,0.0377) ( Prev 9 of 18 Next > ........*..
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