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Let us consider the sample data: Age of ABC Company workers (years) Number of workers 20 - 24 4 24 - 28 6 28 -

Let us consider the sample data:

Age of ABC Company workers (years) Number of workers

20 - 24 4

24 - 28 6

28 - 32 4

32 - 36 2

Assume age has normal distribution and the sample parameters are: = , = , If you want to check the claim that the mean age for all ABC Company workers is above 25 years, what is your test statistic value ?

( = , = , = )

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