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If [0 is less than X is less than 1 ], then X^2 is less than X. If you square a positive fraction or a positive decimal (i.e., a number that falls between zero and one) then the result is always a smaller number.
If the Pearson Correlation is 0.18, what do we get, what is the value called, and what does it tell us?
A normal distribution with a mean of 55 and a standard deviation of 6 is evaluated to solve a business problem.
Now make a scatter plot of data from 1982 to 1998 (again, use years since 1800). Determine a linear, power, or exponential model that explains the crude oil production during this time period.
The following data show levels of fertilizer use (lbs) and wheat yield (bushels) on repeated trials on a six acre plot.
Construct three scatter plots for: (1) percentage alcohol versus calories, (2) percentage alcohol verses carbobydrates, and (3) calories versus carbohydrates
The company investigating the golf balls is not satisfied with the limited analysis that it has done. The managers have collected a good deal of data, but they are not sure how to look at them and interpret the output.
If the mean IQ of all Omega University students was equal to 115, and a small random sample of students was selected from the population whose mean IQ was 120, then this difference of 5 points would equal the:
Find a 95 percent confidence interval for the population mean concentration of uric acid in this patients blood. The concentration of uric acid in this patient's blood.
Critically discuss some examples of descriptive statistics? Why are they used in research? What is a confidence interval?
What sample size must you take to be 96% confident that the results will be within $.75 of the true mean cost per call?
A survey found that 85% of women in a given city enjoy shopping online. Suppose you randomly selected 6 women from the city and ask them whether or not they enjoy shopping online. Find the probability that exactly 4 say they enjoy shopping online.
Which of the variables below do you think will be roughly normally distributed? Please select all that apply.
You run a two tail t-test. The critical value for this test at the .05 level is a t of 7.82. What value must the obtained t-test statistic be in order to be considered significant at the .05 level?
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