Aschool official took a sample of 25 school administrators in the state of ohio

Aschool official took a sample of 25 school administrators in the state of ohio to learn about the salaries in that state to see if they differed from the national average.

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) the sample data for 25 ohio administrators is contained below. what is the p-value for your hypothesis test in part a?

c) at alpha = 0.05, can your null hypothesis be rejected? what is your conclusion?

d) repeat the preceding hypothesis test using the critical value approach?

salary data

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