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The Monty Hall dilemma (§6.1)
A game-show climax draws nigh. A drum-roll sounds. The game show host leads you to a wall with three closed doors. Behind one of the doors is the automobile of your dreams, and behind each of the other two is a can of dog food. The three doors all have even chances of hiding the automobile. The host, a trustworthy person who knows precisely what is behind each of the three doors, explains how the game will work. First, you will choose a door without opening it, knowing that after you have done so, the host will open one of the two remaining doors to reveal a can of dog food. When this has been done, you will be given the opportunity to switch doors; you will win whatever is behind the door you choose at this stage of the game. Do you raise your chances of winning the automobile by switching doors?
How many business majors would be required to evaluate mean salary to within 10 with 95% confidence if population standard deviation is %200.
Use software to test if the mean of differences, mother's age minus father's age, is negative for the larger population of students; first report the mean.
Several companies have been developing electronic guidance systems for cars. Motorola and Germany's Blaupunkt are two firms in the forefront of such research.
From the shipment you take a random sample of 20. When sampling with replacement (binomial), determine the probability of obtaining: Exactly two defective components in the sample of 20.
Make a purchase using the internet. Test the claim that the proportion of consumers ages 35-44 who plan to make purchases using the internet has increased at α = 0.01.
Does the black grease beneath football players' eyes really reduce glare or just make them look intimidating? In a variation of a study actually conducted.
(a) Why is this a legitimate finite probability model? (b) What is the probability that the person chosen is a 15- to 19-year-old who lives with others?
Determine the sample size (n) for the estimate of µ for the following. E = 2.3, s = 15.40, confidence level = 95%. Round to the nearest whole number.
estimating the individual score using normal distribution.systolic blood pressure for men is normally distributed with
Based on these results, does te diet appear to be effective? Does the diet appear to have practical significance?
What is predicted value for National Health Expenditure as a % for 2010? What is the 95% confidence interval for your estimate? Does the trend continue? Does year impact expenditure?
question 1 what is the difference between the chi-square test for goodness-of-fit and the chi-square test for
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