The national mean annual salary for a school administrator is $90,000 a year (The Cincinnati Enquirer, April 7, 2012). A school official took a sample of 25 school administrators in the state of Ohio to learn about salaries in that state and to see if they differed from the national average. Click on the webfile logo to reference the data. a. Formulate hypotheses that can be used to determine whether the population mean annual administrator salaries in Ohio differ from the national mean of $90,000.
Null hypothesis:
1. u equals 90,000
2 u does not equal 90,000
3. u is less than 90,000
Choose correct answer from above choice
- Select your answer -123Item 1
Alternative hypothesis:
1. u does not equal 90,000
2. u equals 90,000
3. u is less than 90,000Choose correct answer from above choice
- Select your answer -123Item 2
b. The sample data for 25 Ohio administrators is contained in the WEBfile named Administrator. What is the p-value for your hypothesis test in part (a)? Round your answer to four decimal places.
Salary
77600
76000
90700
97200
90700
101800
78700
81300
84200
97600
77500
75700
89400
84300
78700
84600
87700
103400
83800
101300
94700
69200
95400
61500
68800