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The One-Way ANOVA applet lets you see how the F statistic and the P-value depend on the variability of the data within groups and the differences among the means.
(a) The black dots are at the means of the three groups. Move these up and down until you get a con?guration that gives a P-value of about 0.01. What is the value of the F statistic?
(b) Now increase the variation within the groups by dragging the mark on the pooled standard error scale to the right. Describe what happens to the F statistic and the P-value. Explain why this happens.
A nurse at a local hospital is estimating the weight of infants. how large a sample must she select if she desires to be 95% confident that the true mean is within 3 ounces of the sample mean?
Recalculate the confidence interval. Using the results, describe the effect of an outlier or extreme value on the confidence interval.
Arbitrarily choose someone from sample. Determine the probability that they are Jewish and Democrat?
What have you learned about statistics?" In developing your responses, consider - at a minimum - and discuss the application of each of the course elements in analyzing and making decisions about data (counts and/or measurements).
it is theorized that repetition aids recall and that the learning of new material can interfere with the recall of
If you have multiple regression output with 2 independent variables and R-Square is .9682, what does R-Square indicate?
In effect, she wanted to determine if there was a relationship between FCAT Science Standardized score and FCAT Reading Standardized score.
Jan finished culinary school and wants to start her own pastry business. She has a few options, and believes that a sensitivity analysis would help her to make the best business decision. She is considering three options, and is confident that..
131 are enrolled in both economics and mathematics course. Determine the probability that freshman selected at random from group is enrolled in each of the following?
according to a survey 90 of senior executives at major u.s corporations felt that the federal budget will not be
smith travel research provides information on the one-night cost of hotel rooms throughout the united states usa today
In a poll of 553 voters in a certain city, 64% said the back a bill which would limit growth and development in their city. The margin of error in the poll was reported as 4 percentage points.
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