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The random variable x has the following probability distribution.
x 1 2 3 4 5
P(x) 0.5 0.2 0.1 0.1 0.1
Find the mean and standard deviation of x.
Determine the range of values containing 50% of the population of x. From a large sampling (N>5000), we find that x has a mean value of 5.2 units and a standard deviation of 1.0 units.
You are a realtor with a small business. You use a simple 2 variable linear regression analysis for quick first glance house price estimates using square footage of the house.
The mode for a set of n = 50 responses to this question. Which of the following statements accurately describes the measures of central tendency?
Which probability distribution is suitable when sampling without replacement?
20 students in a class - if there is a 15% probability that a randomly chosen member has seen a particular movie - what is the expected number of students have seen the movie?
What are the null and alternative hypotheses to test if the new battery has longer life than the old battery? Draw a conclusion for the hypothesis test. Make sure you state your conclusion in the context of the problem.
A side effect of a certain anesthetic used in surgery is the hiccups, which occurs in about 10 percent of the cases. If three patients are scheduled for surgery today and are to be administered this anesthetic, compute the probability that:
Construct a 95% confidence interval estimate for the mean yield of five-year certificates of deposit.
The following data on annual rates of return were collected from five stocks listed on the New York Stock Exchange ("the big board") and five stocks listed on NASDAQ.
Write the following phrase using symbols. 4 times the sum of m and q. Elaine was charged $195 interest for 1 month on a $1000 credit card balance. What was the monthly interest rate
Find the zeros of the function in terms of e, f, and g. Under what condition would the zeros of the given function be two distinct real values?
What is the null and alternative hypothesis? What is your final conclusion?
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