According to Beautiful Bride magazine, the average age of a groom is now 26.2 years.  A sample of 16 prospective grooms in Chicago revealed that their average age was 26.6 years with a standard deviation of 5.3 years. What is the test value for a t test of the claim?

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A: The dataset 'longley' is read in R using the following code:

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A: Solution

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A:

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A:

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