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Discuss 1. a population and 2, 3. two variables on the individuals in that population whose values you suspect of having a linear relationship in that population.
A national report claims that 70% of people who graduate high school enroll in college. 30 out of the 50 people (who graduated high school) reported that they were enrolled in college. Can you prove their claim that 70% of people who graduate high..
Suppose researchers have just discovered a new version of a diagnostic blood test. Data from 100 subjects were collected. Sixty of the subjects were known healthy patients and 40 had liver disease. The test results are given below.
When sampling is from a population with mean 53 and standard deviation 10, using a sample of size 400, what are the expected value and the standard deviation of the sample mean?
When you disaggregate the overall income variance (a.k.a. the static-bubget variance) down into a sales-volume variance and a flexible-budget variance.
To estimate p, we use the proportion p-hat in the sample who answer "Yes." Justify the use of a normal approximation and find the following probabilities.
a pysics lab instructor wants to estimate the time required for physic students to complete a required experiment. from
hypothesis that the random sample was drawn from a uniform distribution on the interval (0, 1) by carrying out a X2 test of goodness-of-fit at the level
An urn contains w white chips, b black chips, and r red chips. The chips are drawn out at random, one at a time, with replacement. What is the probability that a white appears before a red?
in an analysis investigating the usefulness of pennies the cents portions of 82 randomly selected credit card charges
Testing for Population mean - Can the difference in average educational level between the sample and the nation be explained by chance variation?
Perform k-means clustering with the number of clusters set to five (5). Be sure to Normalize the Input Data - . Which cluster(s) are the best formed and why? Which cluster(s) are the poorest formed and why?
Suppose that we wish to estimate the average daily pollution in Lake Erie. The daily yield, recorded for n = 50 days, produced a mean and standard deviation equal to y = 871 tons and s = 21 tons, respectively.
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