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Preliminary results indicate that once a golfer has checked in, there is only at 20% chance that he or she will be a no-show. This chance of being a no-show can be modeled using the binomial distribution.
The following frequency distribution reports electricity cost for sample of 50 two-bedroom apartments in Albuquerque, New Mexico during the month of May last year.
A sample of 200 traffic accidents this year showed 74 persons were also involved in another accident within the last five years. Use the .01 significance level. Can we use z as the test statistic? Tell why or why not.
Find out a 95% confidence interval for the proportion p of adults who have a great deal of trust and confidence in the executive branch of government.
What is the probability that no more than two of the three are commercial successes?
Find out the z values for 29 and 34 hours. What percent of the garages take between 32 hours and 34 hours to erect? What percent of the garages take between 29 hours and 34 hours to erect?
Using the internal rate of return as a decision criterion, determine whether or not this proposal should be accepted.
The probability that average amount of purchase per weekend from Sam's sample is greater than average amount of purchase per weekend from Katie's sample =
Determine the probability that person's monthly gasoline (gallon) purchases will be less than 67 gallons.
What signified to you on all of the problems that required a binomial distribution that you were to use a binomial distribution? Which problems required a binomial distribution?
The machine will stop working if more than three components fail. Find the probability that the machine will be working.
Research question : At α = . 01, is degree of certainty independent of credits earned?
Carefully define a standard normal distribution. Why does a researcher want to go from a normal distribution to a standard normal distribution? Explain.
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