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A Fitness Club Claims That the Average Age of Its

Question 33

Essay

A fitness club claims that the average age of its members is 42.Assume that the ages are normally distributed.You believe that the average age is less than 42,therefore,you ask the ages of a few of the fitness club's members and get the following values: 40,55,50,33,38,35,30,and 45.Do you have any reason at the 10 per cent level of significance to think the fitness club's claim is incorrect?

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H0 : μ = 42 against H1 : μ < 42
The sample...

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