The researcher states that the average time of advertising on TV for beverage products is 20 seconds at most, but manufa

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The researcher states that the average time of advertising on TV for beverage products is 20 seconds at most, but manufa

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The Researcher States That The Average Time Of Advertising On Tv For Beverage Products Is 20 Seconds At Most But Manufa 1
The Researcher States That The Average Time Of Advertising On Tv For Beverage Products Is 20 Seconds At Most But Manufa 1 (18.13 KiB) Viewed 34 times
The researcher states that the average time of advertising on TV for beverage products is 20 seconds at most, but manufacturers say it is more than 20 seconds. To decide which statement is true, then observations were made by taking a sample of 16 beverage advertisements. Data show that the average display time is 22 seconds and the sample standard deviation is 3 seconds. In testing the hypothesis Ho: u <= 20 and Ha: u > 20, Ha is accepted at the level of significance-5% when: A. other B. Z> talpha/2, v=df=16 C. Z> Zalpha D. t> talpha/2, V=df=15
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