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In his management information systems textbook, Professor David Kroenke raisies an interesting point: "If 98% of our market has Internet access, do we have a responsibility to provide non-Internet materials to the other 2%?" (D.M. Kroenke, Using MIS, Upper Saddle River, NJ: Prentice Hall, 2007, p. 29a). Suppose that 98% of the customers in your market have Internet access, and you select a random sample of 500 customers. What is the probability that the sample has:
a. Greater than 99% of the customers with Internet access?
b. Between 97% and 99% of customers with Internet access?
c. Fewer than 97% of the customers with Internet access.
Find out the following probabilities. Probability that exactly 27 items will be good.
The number of customers who have requested a reservation at full fare for this flight in the past always has a normal distribution with mean 40 and standard deviation 10. Determine how many seats should be reserved for customers who pay full fare.
The firm has already decided that any sample mean below 78 or above 82 will signal the workers that the process is not working properly.
A study of 40 bowlers showed that there average score was 186 the standard deviation of the population is 6. Find the 95% confidence interval of the mean score for all bowlers.
Determine out the regression equation. Determine the estimated sales if 40 contacts are made.
Determine the probably of selecting a female or an accounting major? Which rule of addition did you apply?
What is the appropriate inferential statistical test for the case scenario? Why?
Calculate expected value for each decision and choose the best one. Find out how much firm would be eager to pay to a market research firm to gain better information about future market conditions.
An instructor claims the average time to take a statistics test is greater than 39 min. As, if a sample of 33 students took 43 min. is the instructor's claim true?
The Globe Fishery packs shrimp that weigh more than 1.91 ounces each in packages marked" large" and shrimp that weigh less than 0.47 ounces each into packages marked "small"; the remainder are packed in "medium" size packages.
If p denotes the p -value of the corresponding hypothesis test, which of the following is true?
Finding Normal probabilities using standard normal table or Excel built in functions
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