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The data set drums. txt contains weights that were made on 30 drums of a chemical product. Weights were taken before the drums were filled (empty drum weight) and after the drums were filled (full drum weight).
(a) Construct a runs chart for the empty weight. Include a line at the average empty weight for reference and comment on the chart.
(b) Construct a runs chart for the full weight. Include a line at the average full weight for reference and comment on the chart.
(c) Construct a runs chart for the net weight. Include a line at the average and a line at the target of 411 and comment on the chart.
in the fall semester of 2011 48.1 of the students at a university were women. suppose that two students in the
Safe T cigarettes claim that their product has "low tar." Government standards are that this claim is invalid if there are more than 13.5mg tar per cigarette.
Whether regression can be used to estimate the Demand from other data in the file. So that Howies can determine the daily supply in a more cost effective way.
Find the probability of guessing (a) exactly three answers correctly, (b) at least three answers correctly, and (c) less than three answers correctly.
In Colorado Springs the newspaper runs mug shots of wanted criminals. The 17% of those published are arrested through information provided to the police. If 200 are published, find the probability that less than 30 are arrested.
the following regression equation y-bar 53.9 8.4x relates x the number of hours a student studies for a test and y
find the unexplained variation for the paired data. the paired data below consists of test scores and hours of
The second letter that falls off is an "A" knowing that the first letter that fell off was a "M"
On the faculty of a university there are three professors named Smith
A multiple linear regression has been performed using four independent random variables, X1, X2, X3 and X4. The regression output is:
Give an example of using the distributive property for a negative monomial times a trinomial with different signs on the terms [for example: -3x(2xy + 3y - 2x)] and show each step of the distribution.
a sample of 16 items provides a sample standard deviation of 9.5. test the following hypotheses using a .05.? 0 s 2
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