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An airline promotion to business travelers is based on the assumption that two third of business travelers use a laptop computer on overnight business trips. A sample of an American Express sponsored survey found that 355 of 546 business travelers use laptop computers on overnight business trips. State the hypotheses and test the assumption that two third of business travelers use a laptop (α = 0.05).
Suppose you have drawn a simple random sample of 400 business executives. In this sample, 150 executives owned Blackberries.
How many voters required to be sampled to evaluate the proportion within 0.05 with 95% confidence?
If an auditor takes a random sample of 36 accounts what is the probability that the mean balance will be less than 45?
The Nile Superstore is conducting a survey of consumer preferences for a new wireless, e-book reader. A sample of 160 people reveals that 120 would buy the new reader. Estimate the value of the population proportion.
The supermarket is open 16 hours per day. What is the probability that the total number of customers who enter the supermarket in one day is greater than 10,000?
What is the probability that a randomly selected eagle's wingspan is exactly 77 inches? Explain your answer. What is the probability that a randomly selected eagle's wingspan is 77 inches or less?
ABC Corporation has been using statistical process control for several months.
Discuss at least three reasons why these predictions may not be accurate and offer three ways in which you can increase the likelihood of accurately predicting your customers' purchases.
The mode for a set of n = 50 responses to this question. Which of the following statements accurately describes the measures of central tendency?
Find out the probbility that exactly five arrive within two days?
Get an answer from tutors to this homework question now: Under what circumstances is the experimentwise alpha level a concern?
A new book is being released and a bookstore predicts that 70% of customers that walk through the door on the release day will purchase the book.
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