Questions from Applied Statistics

Q: A beer distributor is comparing quarterly sales of Coors Light (number

A beer distributor is comparing quarterly sales of Coors Light (number of six-packs sold) at three convenience stores. Does this sample provide sufficient evidence to conclude that there is a signific...

Q: A small independent stock broker has created four sector portfolios for her

A small independent stock broker has created four sector portfolios for her clients. Each portfolio always has five stocks that may change from year to year. The volatility (coefficient of variation)...

Q: Oxnard Petro, Ltd., has three interdisciplinary project development teams that

Oxnard Petro, Ltd., has three interdisciplinary project development teams that function on an ongoing basis. Team members rotate from time to time. Every 4 months (three times a year) each department...

Q: A market research firm is testing consumer reaction to a new shampoo

A market research firm is testing consumer reaction to a new shampoo on four age groups in four regions. There are five consumers in each test panel. Each consumer completes a 10-question product sati...

Q: (a) At α = .05, does the following

(a) At α = .05, does the following sample show that daughters are taller than their mothers? (b) Is the decision close? (c) Why might daughters tend to be taller than their mothers? Wh...

Q: Oxnard Petro, Ltd. has three suppliers of catalysts. Orders

Oxnard Petro, Ltd. has three suppliers of catalysts. Orders are placed with each supplier every 15 working days, or about once every 3 weeks. The delivery time (days) is recorded for each order over 1...

Q: In a one-factor ANOVA with sample sizes n1 = 5

In a one-factor ANOVA with sample sizes n1 = 5, n2 = 7, n3 = 6, n4 = 7, n5 = 5, the test statistic was Fcalc = 2.447. (a). State the hypotheses. (b). State the degrees of freedom for the test. (c)...

Q: In a one-factor ANOVA with sample sizes n1 = 8

In a one-factor ANOVA with sample sizes n1 = 8, n2 = 5, n3 = 6, n4 = 6, the test statistic was Fcalc = 3.251. (a). State the hypotheses. (b). State the degrees of freedom for the test. (c). What i...

Q: For each data set: (a) State the hypotheses

For each data set: (a) State the hypotheses. (b) Use Excel’s Data Analysis (or MegaStat or MINITAB) to perform the one-factor ANOVA, using α = .05. (c) State your co...

Q: For each data set: (a) State the hypotheses

For each data set: (a) State the hypotheses. (b) Use Excel’s Data Analysis (or MegaStat or MINITAB) to perform the one-factor ANOVA, using α = .05. (c) State your co...