annual salary for a school ris $90,000 a year (The Cincinnati Enquirer, April 7,

Question

annual salary for a school ris $90,000 a year (The Cincinnati Enquirer, April 7, 2012). A school official took a sample of 25 school adminisrators in the state of Ohio to learn about salaries in that state and to see if they differed from the national average. on the datafile logo to reference the data. DATA a Formulate hypotheses that can be used to determine whether the population mean annual administrator salaries in Ohio drer from the national mean of S90 Null hypothesis: 2. Mr.?. 90,000 3. Mr. ?

Explanation / Answer

The test is a two tailed test with:

Defrees of freedom = n - 1 = 25 - 1 = 24

Hence,

Critical t value = 2.07

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