Questions from Business Statistics

Q: If a population proportion is .28 and if the sample size

If a population proportion is .28 and if the sample size is 140, 30% of the time the sample proportion will be less than what value if you are taking random samples?

Q: According to a study by Decision Analyst, 21% of the

According to a study by Decision Analyst, 21% of the people who have credit cards are very close to the total limit on the card(s). Suppose a random sample of 600 credit card users is taken. What is t...

Q: According to a survey by Accountemps, 48% of executives believe

According to a survey by Accountemps, 48% of executives believe that employees are most productive on Tuesdays. Suppose 200 executives are randomly surveyed. a) What is the probability that fewer than...

Q: A Travel Weekly International Air Transport Association survey asked business travelers about

A Travel Weekly International Air Transport Association survey asked business travelers about the purpose for their most recent business trip. Nineteen percent responded that it was for an internal co...

Q: The mean of a population is 76 and the standard deviation is

The mean of a population is 76 and the standard deviation is 14. The shape of the population is unknown. Determine the probability of each of the following occurring from this population. a) A random...

Q: Forty-six percent of a population possesses a particular characteristic.

Forty-six percent of a population possesses a particular characteristic. Random samples are taken from this population. Determine the probability of each of the following occurrences. a) The sample si...

Q: In the past few years, outsourcing overseas has become more frequently

In the past few years, outsourcing overseas has become more frequently used than ever before by U.S. companies. However, outsourcing is not without problems. A recent survey by Purchasing indicates th...

Q: Suppose the age distribution in a city is as follows.

Suppose the age distribution in a city is as follows. Under ___________ 18 22% 18–25 ……………………….. 18% 26–50 ……………………….. 36% 51–65 ……………………….. 10% Over 65 …………………….. 14% An Analyst is conducting propor...

Q: Candidate Jones believes she will receive .55 of the total votes

Candidate Jones believes she will receive .55 of the total votes cast in her county. However, in an attempt to validate this figure, her pollster contacts a random sample of 600 registered voters in t...

Q: Determine a possible frame for conducting random sampling in each of the

Determine a possible frame for conducting random sampling in each of the following studies. a) The average amount of overtime per week for production workers in a plastics company in Pennsylvania. b)...