The following is a partial ANOVA table regarding the service satisfaction on fiv
ID: 3231561 • Letter: T
Question
The following is a partial ANOVA table regarding the service satisfaction on five auto body shops. 35 customers were surveyed. Use alpha = 0.05 a. Complete the table by missing information (marked as ?). b. State the null hypothesis and the alternative hypothesis. H_0: H_1: c. What is the value of statistic? d. What is your conclusion regarding the service satisfaction among five shops? An insurance company recorded the mean damage for a natural disaster in its area was $520. After introducing several plans to prevent loss, it randomly samples 49 policyholders and finds the mean amount per claim was $501 with a standard deviation of $70. Use alpha = .05, can we concluded the prevention plans were effective in reducing the mean amount of claim? a. State the null and alternative hypotheses. H_0: H_1: b. What is the critical value of the test? c. What is the decision rule? d. Using the critical value approach, state your decision regarding H0.Explanation / Answer
Answer to the questions below:
a.
Ho:Mu>500
Ha:Mu<=500
b. Zc = (500-520)/(70/sqrt(49)) = -2
c. The decision rule is that if Zc<-1.96 then we reject null and accept the claim
d. Since Z<Zc. We conclude that the claim of the insurance company about reducing the mean amount of claim is right
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