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Adults around the world watch on average 4 hours of TV a day. A researcher thinks...

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Statistics

Adults around the world watch on average 4 hours of TV a day. Aresearcher thinks that Americans watch less TV than theinternational average. He finds 25 Americans who watch 3 hours oftelevision a day on average, with a standard deviation of 2 hours.Using an Alpha = .05, test this hypothesis.

BE SURE TO ANSWER ALL PARTS OF THE QUESTION AND SHOW YOUR WORKWHEN YOU CAN.

a) What is the appropriate test?

b) State the null Hypothesis (in words and with means).

c) State the alternative hypothesis (in words and withmeans).

d) Find the critical value.

e) Calculate the obtained statistic.

f) Report the results. Make a decision

Answer & Explanation Solved by verified expert
3.7 Ratings (311 Votes)
a This is a OneSample ttest Because the sample size is small n 25 is less than 30    See Answer
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