Questions from Business Statistics

Q: Refer to the data for problem 1. a. Find

Refer to the data for problem 1. a. Find the F statistic and its numbers of degrees of freedom. b. Interpret the F statistic in terms of how many times more volatile one source of variability is than...

Q: Are prices really higher in department stores as compared to off-

Are prices really higher in department stores as compared to off-price stores? Kirby and Dardis examined prices of 20 items (shirts, pants, etc.) for 13 weeks and found that prices are indeed 40% high...

Q: Camera angle can make a difference in advertising; it can even

Camera angle can make a difference in advertising; it can even affect the viewer’s evaluation of a product. A research article reported a main effect for camera angle (F2,29 = 14.48, p

Q: Another experiment in the report by Meyers-Levy and Peracchio involved

Another experiment in the report by Meyers-Levy and Peracchio involved the evaluation of bicycle pictures taken with various camera angles, as evaluated by two groups of individuals with different lev...

Q: Refer to the data for problem 1. a. Find

Refer to the data for problem 1. a. Find the critical value from the F table at the 0.1% level and report the result of the F test at this level. b. Summarize what this test has told you about any dif...

Q: Refer to the data for problem 1. a. Find

Refer to the data for problem 1. a. Find the average difference between the effectiveness of ad 1 and that of ad 2 (computed as ad 2 minus ad 1). b.* Find the standard error for this average differenc...

Q: Refer to the data for problem 1. a. Find

Refer to the data for problem 1. a. Find the average difference and its standard error for every pair of advertisements (computed as ad 2minus ad 1, ad 1minus ad3, and ad 2minusad 3). b. Test every pa...

Q: Three companies are trying to sell you their additives to reduce waste

Three companies are trying to sell you their additives to reduce waste in a chemical manufacturing process. You are not sure their products are appropriate because your process is different from the i...

Q: Refer to the data for problem 6. a. Find

Refer to the data for problem 6. a. Find the F statistic and its numbers of degrees of freedom. b. Interpret the F statistic in terms of how many times more volatile one source of variability is than...

Q: Refer to the data for problem 6. Would it be appropriate

Refer to the data for problem 6. Would it be appropriate to use the least-significant-difference test to find out whether Cleen Up has significantly lower waste than Sludge Away (at the 5% level)? Why...