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2.142 Stock prices and earnings. In the long run, the price of a company's stock ought to parallelchanges in the company's earnings. Table 2.8 gives data on the annual growth rates in earnings and in stock prices (both in percent) for major industry groups as set by Standard & Poor's.55
(a) Make a graph showing how earnings growth explains growth in stock price. Does it appear to be true that (on the average in the long run) stock price growth parallels earnings growth?
(b) What percent of the variation in stock price growth among industry groups can be explained by the linear relationship with earnings growth?
on a recent day a store manager noted that 65 custumers bought at least eight items. This was one fifth of the total number of customers that day. Write and solve an equation to find the total mumber of customers.
Explain why ??(??) = arctan ?? cannot occur as a Laplace transform of a reasonable function ??(??). There is exactly one constant C for which ??(??) = arctan ?? + ?? satisfies lim ??(??) = 0. ??→∞ ?Find this constant
What is the probability that the rat will turn left on the second trial?
A street light is on top of a 10 foot pole. Joe, who is 6 feet tall, walks away from the pole at a rate of 4 feet per second. At whatspeed is the tip of Joe's shadow moving from the base of the pole when he is 15 feet from the pole?
What is the average number of customers at the tax service, whether waiting for the tax preparer or having the return prepared?
a store wishes to predict net profit as a function of sales for the next year.the following table gives the years 1998
Jon rented a car from a company that charged a daily rental fee and a mileage charge. He rented the car for 8 days and drove 300 miles and was charged $345. His friend Amanda
A forest consist of two types of trees: those that are 0-5 feet tall and those that are taller than 5 feet. Each year, 40% of all 0-5 feet tall trees die, 10% are sold for $20 each, 30% stay between 0-5 feet tall, and 20% grow to be more than 5 fe..
Psychologists interested in learning theory study learning curves.
Calculate the area under the standard normal curve to the left of these values:a. z = -1.4 and z = 1.4b. z = -3.0 and z = 3.0
24. An old urn is discovered that looks like a cylinder except that the side is wavy. The urn is 6 inches high. Scientists want to estimate the volume of the urn so they measure its circumference at intervals of 2 inches, and produce the follow..
What is the boundaries of each value a. 42.8 Miles b. 1.6 milliliters c. 5.36 ounces d. 18 tones e. 93.8 ounces f. 40 inches
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