The national mean annual salary for a school administrator is $90,000 a year (Th
ID: 3217043 • Letter: T
Question
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. 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
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
Explanation / Answer
The statistical software output for this problem is:
One sample T hypothesis test:
: Mean of variable
H0 : = 90000
HA : 90000
Hypothesis test results:
So,
p - Value = 0.0426
Variable Sample Mean Std. Err. DF T-Stat P-value Salary 85272 2207.846 24 -2.1414537 0.0426