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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