Question

12. A researcher wants to estimate the average attitude towards the new feature in Google called "Froogle" using a 7pt Likert scale so that the estimate will be within ± .3 of the true population value. What size sample should this research collect? You can assume a 95% confidence level is desired. Also, past studies indicate that the population standard deviation of constructs measuring attitude towards new search features like "Froogle" is 1.23 13 Suppose the Division of Tourism is interested in knowing the proportion of all out-of- state fishermen who took at least one overnight fishing trip in the past year. Suppose also that they wanted this estimate within +/- 2 percentage points, and they wanted to be 95% confident in the results. A similar study had been conducted two years ago and found that 25% of the respondents were from out of state and had taken at least one overnight fishing trip. What size sample should the researcher for the Division of Tourism collect? 14. To complete this question you will need to use the Excel data and codebook file provided on iLearn (See file: Data Codebook for Problem Set Q14.xlsx) Al-A6 are items used to measure the construct: Attitude towards Apple iPhone quality. Run a correlation matrix using the variables measuring respondents' attitude toward the quality of Apple iPhones. Provide a copy of the correlation matrix (Do not provide a copy of the Excel data) Calculate the Cronbach's alpha for this construct (show your work). Based on the Cronbach's alpha, what variables would you use to create the construct Attitude towards Apple iPhone quality from variables A1-A6? Please explain Explain how you would create the construct Attitude towards Apple iPhone quality from variables A1-A6 What is the overall Attitude towards Apple iPhone quality in this sample? a. b. c. d. e.

Answer 1

As per HomeworkLib policy i answered the first 2 questions

12) Answer Compute Sample Size n (Z a/2 S.D / ME) ^2 Za/2 at 0.05% LOS is 1.96 (From Standard Normal Table) Date: --5/7/2019 Standard Deviation (S.D) 1.23 ME 0.3 n (1.96 1.23/0.3) ^2 (2.41/0.3) ^2 64.58 65

13) p 0.25 E Za P(1-p) 2 1.96 0.25* (1 -0.25) < 0.02 n>1800.75 n 1801