Determine the hypothesised value, Basic Statistics

Read Confidence Intervals and P-values in Section C of your Lecture Workbook or on Cecil under Assignment Resources. Consider a study to determine ways the response rate in surveys can be improved. Two types of approaches are under consideration - telephoning prior to mailing out or not telephoning prior to mailing out the survey questionnaire. Telephoning people would create additional expenses. Therefore the question is, does telephoning people prior to mailing out the survey questionnaire have a beneficial effect on the response rate? In addition, market research companies consider that a difference in response rate of less than 8% would be of no consequence, whereas a difference of 8% or more could result in considerable benefits. Some possible outcomes of the study are:

2147_What is the hypothesised value.png

Notes: 1. PTel - PNoTel = the difference between the true proportion of people who would respond to the survey having received a telephone call (PTel ) and the true proportion of people who would respond to the survey having not received a telephone call (PNoTe).

2. The hypotheses associated with the quoted P-values are:

H0 : PTel - PNoTel = 0 vs H1 : PTel - PNoTel ≠ 0

(a) (i) What is the hypothesised value?

(b) Which case(s) demonstrates, at the 5% level, that the difference in the sample proportions between the response rates for the two survey approaches, , is statistically significant?

(c) For which case(s) are we able to claim that the underlying difference between the response rates for the two survey approaches:

(i) is clearly big enough to have practical significance?

(ii) is too small to have practical significance?

Posted Date: 3/22/2013 5:44:22 AM | Location : United States







Related Discussions:- Determine the hypothesised value, Assignment Help, Ask Question on Determine the hypothesised value, Get Answer, Expert's Help, Determine the hypothesised value Discussions

Write discussion on Determine the hypothesised value
Your posts are moderated
Related Questions
Q. Suppose a study is being done and the population is the American public. How would you go about choosing a random sample population to phone for a survey? Solution: One w

Ask question #Minimum 100 words accepteWhen all factors are taken into account, an insurance company estimates that the probability of my father making a claim for damages to his p

The game of "Bunco" is played with three standard dice. "Bunco" occurs when all three dice show the same number of spots. What is the probability of tossing a "Bunco" on the first

Hierarchical Clustering   Five, two-dimensional data points are shown below: x y -0.43 1.19 -1.66 1.1

SOLVE THE FOLLOWING PROBLEM IN SPSS. A college is conducting a study of its students' expectations of employment upon graduation. Students are sampled by class and major area of s

1. Generate 1000 samples for each of the following discrete random variables: (a). Binomial distribution with n=40, p=0.7, and distr. with n=50, p=0.5 (b). Geometric distribu

Questions In one hybridization experiment 8070 offspring seeds were obtained, and 23.54% of them had green flowers.  The others had white flowers.  Perform a hypothesis test

Susan’s proposed budget for 2011 includes a substantial repayment of the bank loan. If the repayment occurs, is the firm likely to break even in 2012? Explain.

identify a research report published by reputable agencies and evaluate the following ;the problem that was addressed

Definition of capital lease in term of financial arrangement whereby a lessee pays rental for asset. Capital lease is a financial arrangement underlying a agreement where a lesse