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Problem: What is the 95% confidence interval for the following stock? It has an E(R) of 18% and STD DEV of 23%
Use the Simple Random Sample applet to select a sample of 2 items from a population that contains the numbers 1, 2, 3, and 4. Repeat the process 20 times and record the number of times that a 3 is selected in the sample.
Suppose the time it takes a customer to get and pay for seats at the ticket window of a baseball park is a random variable with a mean of 100 seconds.
Based on the data reported by a study, the authors concluded that the distribution of ferritin in older adults had a smaller variance than in young adults
there are examples of deceptive statistics everywhere - visual data presentations chartsgraphs-from magazines to
Find the mean and variance of the binomial, Poisson, uniform, exponential, and standard normal distributions.
1.there are two statistics classes. the first has 250 students and the second has 200 students. in the first class the
A computer store sells computers, monitors, printers. A customer enters the store. Let A, B, C be the respective events the customer buys a computer, a monitor.
Suppose a fair die is rolled twice Let S be the sum of the numbers on the two rolls
The number of tons of brake assemblies received at an auto parts distribution center last month was 670. The forecast tonnage was 720.
For each of the F statistics given above find the degrees of freedom and an approximate P-value. Summarize the results of these tests.
Four students are discussing the meaning of a P-value. Adam: My last stats prof said when you explain a P-value you want to make it so clear that even
A player throws darts at a target. On each trial, independently of the other trials, he hits the bull's-eye with probability .05.
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