Questions from Business Statistics

Q: Consider the following hypothesis test. H0: µ1 - µ2

Consider the following hypothesis test. H0: µ1 - µ2 ≤ 0 Ha: µ1 - µ2 > 0 The following results are for two independent samples taken from the two populations. Sample 1 ………………………………... Sample 2 n1 = 40...

Q: The following data are from matched samples taken from two populations.

The following data are from matched samples taken from two populations. a. Compute the difference value for each element. b. Compute dÌ…. c. Compute the standard deviation sd. d. What is...

Q: A market research firm used a sample of individuals to rate the

A market research firm used a sample of individuals to rate the purchase potential of a particular product before and after the individuals saw a new television commercial about the product. The purch...

Q: The price per share of stock for a sample of 25 companies

The price per share of stock for a sample of 25 companies was recorded at the beginning of the first financial quarter and then again at the end of the first financial quarter. How stocks perform duri...

Q: Bank of America’s Consumer Spending Survey collected data on annual credit card

Bank of America’s Consumer Spending Survey collected data on annual credit card charges in seven different categories of expenditures: transportation, groceries, dining out, household expenses, home f...

Q: The Global Business Travel Association reported the domestic airfare for business travel

The Global Business Travel Association reported the domestic airfare for business travel for the current year and the previous year. Below is a sample of 12 flights with their domestic airfares shown...

Q: The College Board SAT college entrance exam consists of three parts:

The College Board SAT college entrance exam consists of three parts: math, writing, and critical reading. Sample data showing the math and writing scores for a sample of 12 students who took the SAT f...

Q: Scores in the first and fourth (final) rounds for a

Scores in the first and fourth (final) rounds for a sample of 20 golfers who competed in PGA tournaments are shown in the following table. Suppose you would like to determine if the mean score for the...

Q: A personal fitness company produces both a deluxe and a standard model

A personal fitness company produces both a deluxe and a standard model of a smoothie blender for home use. Selling prices obtained from a sample of retail outlets follow. a. The manufacturerâ&...

Q: Consider the following results for independent samples taken from two populations.

Consider the following results for independent samples taken from two populations. Sample 1 …………………………………….. Sample 2 n1 = 400 ……………………………………. n2 = 300 p̅1 = .48 ……………………………………… p̅2 = .36 a. What is...