When 10 Randomly Selected Car Owners Are Surveyed, It Is

question 68

Multiple Choice

When 10 randomly selected car owners are surveyed, it is found that the mean length of time they plan to keep their car is 7.01 years, and the standard deviation is 0.74 years. Assume that times are normally distributed.
-The null and alternative hypotheses to test the claim that the mean for all car owners is less than 7.5 years is _____.

• A)H₀: ? = 7.5 vs.H_a: ? ? 7.5
• B)H₀: ? ? 7.5 vs.H_a: ? < 7.5
• C)H₀: ? ? 7.01 vs.H_a: ? < 7.01
• D)H₀: ? ? 7.5 vs.H_a: ? = 7.5
• E)H₀: ? ? 7.5 vs.H_a: ? > 7.5

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