the average age for teachers was 54 years. with younger teachers coming into the industry and...
the average age for teachers was 54 years. with younger teachers coming into the industry and getting promoted, human resources would like to determine the average age of senior staff is lower than before.
sample size=61
sample mean= 50
standard deviation= 16
1) is this a one tailed or two tailed test?
2)what is the test statistic value?
3)the p-value is between?
4) if the test is done at 90%, 95% and 99% confidence levels, the null hypothesis should be what?
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the average age for teachers was 54 years. with younger teachers
coming into the industry and...
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