Question

Statistic An educator claims that the average salary of substitute teachers in school districts is less...

Statistic

An educator claims that the average salary of substitute teachers in school districts is less than \$60 per day. A random sample of 8 school districts is selected, and the daily salaries are 60, 56, 60, 55, 70, 55, 60, and 55. Is there enough evidence to support the educator’s claim at 10% level of significance? (HELP: The sample mean is 58.88, and the sample standard deviation is 5.08)

A ) State the hypotheses and identify the claim.

A) H0: µ=60, Ha: µ>60 claim              B) H0: µ=60, Ha: µ < 60 claim

C) H0: µ>60, Ha: µ=305 claim           D) H0: µ<60, Ha: µ=305 claim

Find the critical value

A) -1.415       B) 1.96     C) 2.55      D) 2.58

B )Compute the test value.

A) 1.65        B) 1.96      C) -0.624      D) 2.33

C) Make the decision.

A) Do not Reject H0                 B) There is sufficient evidence to reject H0

C) None of the above

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