Question

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        

Answer 1

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