Assignment Task
QUESTION FOUR
The question as to whether annual value method of property rating is to be established in a large municipality was becoming critical. Before the rating value of municipality decides whether or not to adopt the method, he randomly samples 100 ratepayers in that municipality. 40 payers except the method and 60 reject it.
1.Find a point estimate of the proportion of all who favor annual value rating.
2.Estimate the population proportion of all ratepayers who favor annual value rating. (assume the confidence level is 85%)
3.Explain why you feel confident that your estimate is representative of the expected responses of all the ratepayers in the municipality.
4. The rating value realized that in the process of sampling there was biasness in the procedure used. As a result, the sample was increased from hundred ratepayers in the municipality 180.
What is the effect of the rating values’ action on the estimate in above?
b. When the rating value made the decision to increase the rate payers from 100 ratepayers in that municipality to 180 ratepayers he was more confident that these results were more reliable the confidence level Rose to 93% as a result. Briefly explain the effect of this increase on the estimate 2 above.
QUESTION FIVE
In an analysis of the result of telecommunication students the examining board classified the results as either credit, pass or discontinued. Further the board analyze the student’s method of study which was either full-time, part-time or private. An employee of the board cross-classified the examination result and the method of study of 300 students is then computed that test statistics of 42.28.
Required;
State the null and alternative hypothesis that should be tested
What conclusion can be drawn from the result of the data (Use ?=0.05)
QUESTION SEVEN
The trustee of a company’s pension plan has solicited the opinion of a sample of company’s employees regarding a proposed revision of the plan a breakdown of the responses as shown in the table below (refer to table on question sheet)
Is there sufficient evidence at the 5% significance level to conclude that the response differs among the three groups of employees
QUESTION EIGHT
Outline the procedure or testing Hypothesis
A sample employee at a large chemical plant was asked to indicate a preference for one of the three pension plan the results are given in the following table (Refer to the table on Question sheet)
At 1% significance level determine whether there is a relationship between pension plan selected and the job classification of employees.
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