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The publisher of a popular financial periodical has decided to undertake a campaign in an effort to attract new subscribers.
Market research analysts in this company believe that there is a 1 in 4 chance that the increase in the number of new subscriptions resulting from this campaign will be less than 3000, and there is a 1 in 3 chance that the increase in the number of new subscriptions resulting from this campaign will be between 3000 and 5000.
What is the probability that the increase in the number of new subscriptions resulting from this campaign will be less than 3000 or more than 5000?
A random sample of 15 AAA batteries produced by this manufacturer lasted a mean of 9.8 hours with a standard deviation of 2.5hours. Find a 90% confidence interval for the population standard deviation of the lifetimes of AAA batteries produced by ..
The selection is made at random so that the selection of any component is equally likely. What is the probability of drawing any faulty component if 3 different components are drawn?
Find out correlation coefficient r, If student take 35 minutes to complete exam, what is his predicted score.
The store manager offers both Lisa and Brad a $90 incentive bonus if they can sign in more than 90 new customers in a month. Assume a normal distribution to answer the following questions. Use Table 1.
Find the stationary distribution of the Markov chain.
At the 0.05 level of significance, is there evidence that the population mean amount of spending is different from $250 per trimester on textbooks
cherry berry soda inc. claims that 15 percent of the population can identity its products. in efforts to boost their
Let Y(sub-1) be the sales during month t (in thousands of dollars) for a photograph studio, and let P(sub-t) be the price charged for the portraits during month t. The data are included in the file provided below.Use regression to fit the followin..
Using simplex method, define variables, find how many units of each ingredient are required to meet the biologists need at minimum cost? How do I set up the equations for this problem?
is the accounting system the same for a merchandising business and a service business?
1. (a) Find the moment-generating function for a gamma probability distribution with parameter α > 0 and β > 0. [Hint: In the integral representation of E(etX), change the variable t to u = (1 - βt)x/β, with (1 - βt) > 0.] (b) Using the mgf of a ..
A researcher wishes to forcast the proportion of fish in a perticular lake which is inedible due to pollution of the lake.
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