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A researcher wishes to determine whether there is a difference in the average age of middle...


A researcher wishes to determine whether there is a difference in the average age of middle school, high school, and college teachers. Teachers are randomly selected. Their ages are recorded below. Test the hypothesis that there is no difference in the average age of each group. Use

State the null and alternative hypotheses.

Group of answer choices

H0: μ1 = μ2 = μ3
HA: all the means are the same

H0: μ1 = μ2
HA: μ3 is different

H0: μ1 = μ2 = μ3
HA: at least one mean is different from the others

H0: μ1 ≠ μ2 ≠ μ3
HA: μ1 = μ2 = μ3

math   Statistics-And-Probability   
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Answer #1

We have here,

k=Number of groups

i.e. age of middle school, high school, and college teachers.

H0: μ1 = μ2 = μ3
HA: at least one mean is different from the others
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