H0 states that is equal to 25 if n30 and x bar 20 and


H0 states that is equal to 25. If n=30 , and x bar = 20 , and sigma = 3. What is the test statistic?

- As well as the solution please Indicate which formula was used.

- Please solve step by step and indicate how each step is done.

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Basic Statistics: H0 states that is equal to 25 if n30 and x bar 20 and
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