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8.2.10 Consider the data in Exercise 8.2.9. There are two outliers among the 28 differences: the smallest value, which is 2, and the largest value, which is 18. Delete these two observations and construct a 95% confidence interval for the mean increase, using the remaining 26 observations. Do the outliers have much of an effect on the confidence interval?
Some laboratory equipment sells for $75000. The manufacturer offers financing at 8% with annual payments for 4 years for up to $50,000 of the cost. The salesman is willing to cut the price buy 10% if you pay cash.
A five-year-old defender has a current market value of $4,000 and expected O&M cost of $3,000 this year, increasing by $1,500 per year. Future market values are expected to decline by $1,000 per year.
a tire manufacturer warranties its tires to last at least 20,000 miles or "you get a new set". In its experience, a set of these tires last on average 26,000 miles with a standard deviation of 5, 000 miles, Assume that the wear is normally distrib..
Walt Disney World Theme Parks offer tourists a wide variety of ticket options. The one thing these ticket options have in common is that they entail a fixed entrance fees and permit consumers to take as several rides as they wish at no additional cha..
Proponents of the program have said that $400 million will be given directly to taxpayers and argue that this will have an economic effect that is greater than the original $400 million spent because of the multiplier effect. Many voters and taxpa..
Suppose there are two firms in a market who each simultaneously choose a quantity. Firm 1's quantity is q1, and firm 2's quantity is q2. Therefore the market quantity is Q = q1 + q2. The market demand curve is given by P = 60 - 4Q.
Inverse demand function is P = 10-2Q (in millions) Firm 1 has a marginal cost of $2 and Firm 2 has a marginal cost of $6. Current market price is $8 - each firm has 50 percent of the market and each firm has to pay one year's rent of $1 million.
The income tax system in a country requires each citizen to pay 10% of income on earnings up to $40,000, and then pay 20% on any earnings over $40,000. If an individual has an income of $92350, then what is his average tax rate, in percentage term..
A 12-year-old boy, while crossing a bridge over the defendant's trolley tracks, swung an 8-foot-long wire over the bridge. The wire touched the defendant's uninsulated trolley wire, which ran over the tracks of his trolley and beneath the bridge
Suppose that following an oil embargo gas prices rise dramatically so that now business firms must take account of gas prices in their car rental decisions. Their demand for rental cars is now given by: K=1 700-12v-300g
a new smartphone is just being released. the cost function is given by totalcost 5x2 where x is the number of
Assume we observe the following: Qt = 5; pc = 2; pt = 2. If the price of textbooks doubles, by how much does the income have to increase to keep the textbook consumption constant What happens to chocolate consumption Explain.
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