Assignment:
Q1. Hypothesized Mean = 150; sample mean = 145, s = 30, sample size = 200, confidence level=95%
Q2. The manager of the quality assurance department of a light bulb manufacturing company, based on his experience, claims that 95 percent of the bulbs manufactured by the company are defect-free. The CEO of the company, a quality-conscious person, checks a random sample of 225 bulbs and finds only 87 percent of the bulbs to be defect-free. The CEO now wants to test the hypothesis (at the .05 level of significance) that 95 percent of the bulbs manufactured by the company are defect-free.
Q3. The manager of a McDonald restaurant believes that his customers on average spend $5.5 for breakfast. He wondered whether he could enhance customers’ average spending through promotion because he knew other McDonald restaurants had an average of $6.2. If his customers indeed spend $5.5 on average, then there might be a room for an increase in their breakfast spending. A survey was thus conducted with a sample size of 100, x~ =$5.8, s = 1.5, Does the information confirm or disconfirm his initial hypothesis (average spending =5.5)?
Q4. Formulate null and alternative hypotheses: Q11-12a, b and f (p. 328)
Q5. Create a SPSS file using the data provided for Applied Problem 11-18 (Page 329) and then conduct descriptive analyses for Attitude toward Technologyand Usage of Internet: Shopping. Please do not submit the output of your analysis. Submit only the results of your analysis. That is to say: you just need to report the appropriate measures of central tendency and the measures of dispersion.
Q6. Use the data file to test the following: 30 percent of people use online banking service (test percentage = 30%)
Your answer must be, typed, double-spaced, Times New Roman font (size 12), one-inch margins on all sides, APA format.