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It known that when the earnings of the Alpha Corporation go up, its stock price usually goes up. In fact, when earnings go up in one quarter, 65% of the time the stock price goes up the next quarter. When their earnings go down in a quarter, 23% of the time the stock price goes up during the next quarter. If the percent changes in earnings for a quarter are normally distributed with mean 2% and standard deviation 1.5%, what is the probability that the stock price will go up in any given quarter?
automated manufacturing operations are quite precise but still vary often with distributions that are close to
Determine whether the following are demonstrative definitions, enumerative definitions, definitions by subclass, synonymous definitions, etymological definitions, operational definitions, or definitions by genus and difference.
if the random variable z is the standard normal score is it true that pz lt 0 could easily be determined without
What is the minimum sample size?- If the actual percentage defective may be anywhere between 3% and 6%, tabulate the minimum sample size required for actual percentage defective from 3% to 6%.
Conduct a test to determine whether the true mean pouring temperature differs from the target setting. Test using α = .01.
Many different kinds of data can be modeled using exponential and logarithmic functions. For example, exponential functions have been used by Thomas Malthus to describe the growth of human populations.
if z is a standard normal random variable then what is przgt-2.43? use four decimal places of accuracy.can you also
In a prospective study, Data collected extensive information on incidence of coronary heart disease (CHD) among smoker and non-smoker individuals.
what percent of the area under the normal curve is between z 1.22 and z 1.96?a. 0.0862b. 0.8638c. 0.025d.
a researcher designs a study to test the hypothesesnbsph0 u gt 28 versusha u lt 28. a ran- dom sample of 50
In a binomial situation, n = 4 and 1r = .25. Determine the probabilities of the following events using the binomial formula.
the average hourly wage of workers at a fast food restaurant is 6.50hr with a standard deviation of 0.45. assume that
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