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A company ships computer components in boxes that contain 20 items. Assume that the probability of a defective computer component is 0.2. Find the probability that the first defecr is found in the fifth component tested.
Using the original data, test at the 5% significance level that the population standard deviation of studying times is greater than 4 hours.
Developing project network using AOA that determines completion times.
Do you know if there is any differences in the densities of a product at certain temperatures. Here is the data that I received. Tell me if there is any difference.
The monthly sales volume (in thousands of dollars) for a manufacturer of snow skis is seasonal (there tend to be more skis sold during fall and winter months than during warmer months). The following table shows the monthly seasonal indexes for th..
Let the random variable x represent the number that are not correctly calibrated. Find the mean and standard deviation for the random variable x.
Assume that the process is in control and that the population of all jar fills is normally distributed.
Explain the difference between a left-tailed, two-tailed, and right-tailed test. When would we choose a two-tailed test? How can we tell the direction of the test by looking at a pair of hypothesis?
Take a random sample and perform a t-test against a population mean (no time series for any parts of this project.) Test a hypothesis about a population mean.
Health care reform was one of the major platforms of the Clinton campaign in 1992 and one of the top priorities of his new administration in 1993.
According to US Census Bureau, 7.1% of all births to non-smoking mothers are of low birth weight (
Sampling area consisted of an area of 120m x 50m within site two and was bordered by a road on one side and a stream on another.
Public health statistics indicate that about 26.4% of Americans smoke. Suppose a random sample of 50 people is selected. Approximate the distribution of the same proportion with the normal model.
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