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Sixty percent of all vehicles examined at a certain emissions inspection station pass the inspection. Assuming that successive vehicles pass or fail independently of one another, calculate the follo
Suppose that the proportions of blood phenotypes in a particular population are as follows:
A company that manufactures video cameras produces a basic model and a deluxe model. Over the past year, 30% of the cameras sold have been of the basic model.
Each of 12 refrigerators of a certain type have been returned to the distributor because of loud noise. Suppose that 7 of these have defected compressor and 5 have a broken ice cube tray. The refige
Seventy-eight percent of the light aircraft that disappear while in flight in a certain country are subsequently discovered. Of the aircraft that are discovered, 65% have an emergency locator, where
Determine the number of outcomes in the event. Decide whether the event is a simple event or not. You randomly select one card from standard deck. event b is selecting a five.
For the given pair of events, classify the two events as independent or dependent. driving 30mph over the speed limit, getting a speeding ticket.
What percent of the sample reports not drinking?a. Are there independent and dependent variables in this case? If so, what are they? If not, why not?
Decide whether the random variable x is discrete or continuous. x represents the total number of die rolls required for an individual to roll a five.
The weights of a random sample of 49 university male first-year students yielded a mean of 165 pounds and a standard deviation of 6.5 pounds. Determine a 90% confidence interval for the mean weight
A semiconductor company wants to estimate the fraction of defective computer chips it produces. Suppose that a random sample of 900 chips has 18 defective chips.
The mean number of errors per page made by a memebr of the word processing pool for a large company is thought to be 2.4 with the number of errors distributed according to a poisson distribution. if
Salte corporation is issuing new common stock at a market price of $33. Dividends last year were $1.65 and are expected to grow at an annual rate of 9 percent forever. Flotation costs will be 12 per
How many bonds will the firm have to issue to receive the needed funds? What is the firm's after-tax cost of debt if its average tax rate is 25 percent and its marginal tax rate is 33 percent?
A friend of mine is giving a dinner party. His current wine supply includes 8 bottles of zinfandel, 12 of merlot, and 11 of cabernet (he only drinks red wine), all from different wineries. If he wa
The data in the following table represent the total rates of return (%) for three stock exchanges over the three-year preiod from 2004-2006. Calculate the geometric mean reate of return for each of
A company's stock price rose 20.5% in 2004, but dropped 1.5% in 2005: Compute the geometric mean rate of increase for the two year period 2004-2005. (denote a decrease of 1.5% by -.015)
Assuming that the expected monetary value criterion is applicable determine wether the speculator should purchase the commodity. Perform a sensitivity analysis on the speculator's estimate of the prob
A speculator is considering the purchase of a commodity that he reckons has a 60% of increasing in value over the next month. If he purchases the commodity and it does increase in value, the specul
In a test for effectiveness of garlic for lowering cholesterol, 47 subjects were treated with Garlicin. Cholesterol levels were measured before and after the treatment. The changes in their levels
Forty percent of the homes constructed in the Quail Creek area include a security system. Quail Creek is a very large housing development. Three homes are selected at random: (A tree diagram would
Movie stars and U.S. presidents have fished Pyramid Lake. It is one of the best places in the lower 48 states to catch trophy cutthroat trout. In this table, x = number of fish caught in a 6-hour pe
Suppose that two cards are randomly selected from a standard 52-card deck. What is the probability that the first card is a club and the second card is a club if the sampling is done without replace
Among 35-40 year olds 39% say they have operated heavy machinery while under the influence of alchol. Suppose three 35-40 year olds are selected at random.
The probability that a randomly selected 2-year-old male feral cat will live to be 3 years old is 0.88493 (a) What is the probability that two randomly selected 2-year-pld male feral cats will live