Question

Response rates to web surveys are typically low, partially due to users starting but not finishing the survey. The factors that influence response rates were investigated. A survey company designed a study to verify this information. Web users were directed to participate in one of several surveys with different formats. One format utilized a welcome screen with a white background and the other one with a blue background. Data of the survey are given in table. Use three digits whenever necessary.

	white screen	blue screen
completed	141	146
breakoff	49	37

1)The survey company assumes when a welcome screen with a blue background is used the rate of break off will be less than 0.25. Test the claim with a =0.07.

a. State the hypothesis

b. What is the decision rule?

c. Test statistic

d.Decision and managerial decision

e.Calculate the p-value

f.Interpret hypothesis using p-value

Answer 1

1) total number of web users 37+146=183

Please follow the following steps to conduct the hypothesis.

a)

b) Reject the null hypothesis if Z statistic is < -1.48

c) Z = -1.494

d) Reject the null hypothesis,

e) P-value = 0.0676

f) Since P-value is less than the significance level 0.07, we will reject the null hypothesis.