15. A Harris Poll found that 35% of people said that they drink a caffeinated beverage to combat midday drowsiness. A recent survey found that 19 out of 48 randomly selected people stated that they drank a caffeinated beverage to combat midday drowsiness. At a = 0.02, conduct all steps of a hypothesis test to test the finding of the Harris Poll.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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15.
Tu test the claim, she selected a random sample of 36 gum chewers and
found the mean number of sticks of gum chewed per day was 9. The standard deviation of the
population is 1. At a = 0.05, conduct all steps of a hypothesis test to test the researcher's claim.
15. A Harris Poll found that 35% of people said that they drink a caffeinated beverage to combat midday
drowsiness. A recent survey found that 19 out of 48 randomly selected people stated that they
drank a caffeinated beverage to combat midday drowsiness. At a = 0.02, conduct all steps of a
hypothesis test to test the finding of the Harris Poll.
16. The average income of 15 randomly selected families who reside in cities is $62,456, with a standard
deviation is $9652. The average income of 11 randomly selected families who reside in rural areas in
the Midwest is $60,213, with a standard deviation of $2009. Assume the population variances are
not equal. At a = 0.10, is there sufficient evidence to support the claim that families who live in cities
Transcribed Image Text:Tu test the claim, she selected a random sample of 36 gum chewers and found the mean number of sticks of gum chewed per day was 9. The standard deviation of the population is 1. At a = 0.05, conduct all steps of a hypothesis test to test the researcher's claim. 15. A Harris Poll found that 35% of people said that they drink a caffeinated beverage to combat midday drowsiness. A recent survey found that 19 out of 48 randomly selected people stated that they drank a caffeinated beverage to combat midday drowsiness. At a = 0.02, conduct all steps of a hypothesis test to test the finding of the Harris Poll. 16. The average income of 15 randomly selected families who reside in cities is $62,456, with a standard deviation is $9652. The average income of 11 randomly selected families who reside in rural areas in the Midwest is $60,213, with a standard deviation of $2009. Assume the population variances are not equal. At a = 0.10, is there sufficient evidence to support the claim that families who live in cities
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