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A car manufacturer, Swanson, claims that the mean lifetime of one of its car engines is greater than 2 2 0 , 0 0 1
A car manufacturer, Swanson, claims that the mean lifetime of one of its car engines is greater than miles, which is the mean lifetime of the engine of a competitor. The mean lifetime for a random sample of of the Swanson engines was x miles with a standard deviation, s of miles. Test the Swanson's claim using a significance level of
A
Pvalue reject the null hypothesis. There is enough evidence to conclude that the mean lifetime of this car engine is greater than miles.
B
Pvalue reject the null hypothesis. There is enough evidence to conclude that the mean lifetime of this car engine is greater than miles.
C
Pvalue reject the null hypothesis. There is enough evidence to conclude that the mean lifetime of this car engine is greater than miles.
D
Pvalue reject the null hypothesis. There is enough evidence to conclude that the mean lifetime of this car engine is greater than miles.
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