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Why do we care about the variance? How do we know if it is statistically significant or not? Support answer with references
a scientific committee of 4 persons is to be randomly selected from a group consisting of 3 biologists 3 physicists and
What is the probability that (a) all 13 spades end up in the same hand? (b) all four aces end up in the same hand?
assignment-f 7.357r .83 df 4df 3203df 98 p gt .05 p lt .05 p lt .01question 1. what statistical
Are the events the stream has a high BOD and the stream has high acidity independent?
0.71 of all college students like the idea of a new curriculum. if we select 90 students assume independence what is
The mean statistic test scores is 64 and the standard deviation is 6.0. For the biology test scores, the mean is 25 and the standard deviation is
Set up the criteria for making a decision. That is, find the critical value using an alpha = .05. (Make sure you are sign specific: + ; - ; or ± )
The following table provides the weight in grams of a sample of 50 bags produced in one hour by a single machine: Compute the arithmetic mean and median.
If we consider these students representative of all students who might attend this summer school in other years, do these results provide evidence that the program is worthwhile?
Of the top 20 global brands, 24 of them (70 percent) are from United States-based corporations. What effects might this weighing have on the global consumer?
A random sample of 43 light bulbs has a mean life of 677 hours with a standard deviation of 90 hours. Do you have enough evidence to reject the manufacturer's claim?
Shown below are rental and leasing revenue ?gures for of?ce machinery and equipment in the United States over a seven-year period according to the U.S. Census Bureau. Use these data to run a linear regression and then forecast the rental and leasi..
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