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A library subscribes to two different weekly news magazines, each of which is supposed to arrive in Wednesday's mail. In actuality, each one could arrive on Wednesday (W), Thursday (T), Friday (F), or Saturday (S). Suppose that the two magazines arrive indepen- dently of one another and that for each magazine P(W) = .4, P(T) = .3, P(F) = .2, and P(S) = .1. Define a random variable y by y = the number of days beyond Wednesday that it takes for both magazines to arrive. For example, if the first magazine arrives on Friday and the second magazine arrives on Wednesday, then y = 2, whereas y = 1 if both magazines arrive on Thursday. Obtain the probability distribution of y. (Hint: Draw a tree diagram with two generations of branches, the first labeled with arrival days for Magazine 1 and the second for Magazine 2.)
If the answer choices for each question are equally likely, find the probability of answering more than 4 questions correctly.
The required margin of error around the population p. Margin of error: 0.09; confidence level: 95%; from a prior study, p is estimated by the decimal equivalent of 87%.
Standard deviation of 5 hours. What percentage of the bulbs have lifetimes that lie within one standard deviation of the mean on either side?
You're considering an investment in the common stock of Crisp Cookware. The stock is expected to pay a dividend of $2 a share at the end of the year (D1 = $2.00). the stock has a beta equal to 0.9.
Use the correct formula to find the probability that, out of 15 patients, exactly 11 are pleased with the service. Show your calculations or explain how you found the probability.
Calculate the incidence rate of hypertension in the cohort with and without an actuarial adjustment. Did the actuarial adjustment make a difference? Explain your answer.
To find out the prior probability, conditional probability and posterior probability. Calculate the posterior probability that the bid will be successful given a request for additional information.
write the Data Analysis section of the methods and the Results for an experiment, as if for publication in a journal. The experiment and results are completely fabricated and the purpose of the assignment is to demonstrate your ability to analyse ..
Using 5% level of significance, is there any difference in proportion of guests who would select the two resorts? What is your conclusion?
select a company that u can visit in person or interviewon the telephone. call ahead to the company to arrange a time
suppose that an ink cartridge is classified as being overfilled medium filled or underfilled with a probability of
For a year to be in the upper 5% with respect to the number of fatal crashes, determine how many fatal crashes would have to occur.
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