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Let X1 and X2 be observations of a random sample size of n=2 from a distribution with p.m.f. F(x)= x/6, x=1,2,3. Then find the p.m.f. of Y= X1+ X2. Determine the mean and the variance of the sum in two ways.
What percent of the SAT verbal scores are less than 650 and if 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 575?
Create a set of n observations from the binomial distribution with 1 trial and the event probability of 0.007, where n is your answer.
Pretend that you are a Finance person in a large dynamic company. Your dream is to become CFO someday, so you want to make good financial decisions.
Determine the probability that subscriber didn't rent the car during past 12 months for either business or personal reasons?
the makers of a soft drink want to identify the average age of its consumers. a sample of 55 consumers was taken. the
A rental agent claims that the mean monthly rent, mu, for apartments on the east side of town is less than $725. A random sample of 13 monthly rents for apartments on the east side has a mean of $724
The top 25 companies ranked by market capitalization operating in the washington DC, area along with the year they were founded and the number of employees are given below.
question a researcher finds a claim in the newspapers that the average room rate arr of all abu dhabi hotels is 163
A rocket fires two engines simultaneously. One produces a thrust of 800N directly forward while the other gives a thrust of 508N at an angle 38.2^circ above the forward direction.
You are conducting a one-tailed or two-tailed test? Explain with an example and also state the Null and the Alternative hypothesis for the example in symbolic form.
according to a website about salaries the national average salary as of october 2003 for a human resources clerk was
Explain why you would choose these two? What did you learn about correlation and causation while completing the course? Differentiate between correlation and causation.
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