Question
A representative of a car manufacturer in the United States made the following claim in a news report. Ten years ago, only 53 percent of
A representative of a car manufacturer in the United States made the following claim in a news report.
"Ten years ago, only 53 percent of Americans owned American-made cars, but that figure is significantly higher today."
A research group conducted a study to investigate whether the claim was true.The group found that 56 percent of a randomly selected sample of car owners in the United States owned American-made cars.A test of the appropriate hypotheses resulted in a p-value of 0.283.Assuming the conditions for inference were met, is there sufficient evidence to conclude, at the significance level of alpha = 0.05, that the proportion of all car owners in the United States who own American-made cars has increased from what it was ten years ago?
a. Yes, because 0.56>0.53
b. No, because 0.283<0.53
c. No, because 0.283>0.05
d. Yes, because 0.56-0.53=0.03 and 0.03<0.05
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