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Suppose a company owns three cars that get 20 miles per gallon, two cars that get 22 miles per gallon and one car that gets 24 miles per gallon. Would the mean miles per gallon be 22?
In a distribution of scores, the arithmetic mean is 51, the median is 55, and the mode is 62. What is the score, in percentile form, of a subject who does less well than two-thirds of the sample?
The prices (in dollars) for a sample of roundtrip flights from Chicago, Illinois to Cancun, Mexico are listed. Find the mean, median, mode, range, Q1, Q2, variance, and standard deviation of the flight prices.
If you arbitrarily grab 2 socks out of drawer determine the probability that you grab a matching pair?
If a garage is robbed, what is the probability the doors were left open?
The average score of all pro golfers for a particular course has a mean of 70 and a standard deviation of 3.0. Assume 36 golfers played the course today. Find the probability that the average score of the 36 golfers exceeded 71.
Airlines monitor the causes of flights arriving late. 75% of flights are late because of weather, 35% of flights are late because of ground operations. 10% of flights are late because of weather and ground operations.
Compare the means of two populations using 96% confidence interval:
She figures that each box costs $ 2.59 plus $ 0.21 shipping and handling, which totals $ 2.80, then she adds $ 0.70 profit to each box and sells it for $ 3.50. Do you think this is a good pricing strategy? How would it compare to marking up by a p..
Comment on their success or failure to meet this goal.
Draw the distribution of the random variable X, representing her time of arrival. (Be sure to include labels and values on the axes.)
Explain the purpose of the chi-square test for independence. Provide some practical examples where this test might be used in business.
Find a 99% confidence interval estimate of the proportion of people who say that they voted.
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