Formulate hypotheses that can be used to determine whether

Assignment Help Basic Statistics

Reference no: EM13607799

The national mean annual salary for a school administrator is $90,000 a year. A school official took a sample of 25 school administrators in the state of Ohio to learn about salaries in the state to see if they differed from the national average. (if you can do this in excel and past in the formulas you will get the top rating).

a. Formulate hypotheses that can be used to determine whether the population mean annual administrator salary in Ohio differs from the national mean of $90,000.

b. What is the p-value for your hypothesis test in part (a)? Sample data for 25 Ohio administrators at the bottom of question.

c. At a= .05, can your null hypothesis be rejected? What is your conclusion?

d. Repeat the preceding hypothesis test using the critical value approach.

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

Reference no: EM13607799

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