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Three sets of five mice were randomly selected to be placed in a standard maze but with different color doors. The response is the time required to complete the maze as seen in Table 6.28.
(a) Perform the appropriate analysis to test whether there is an effect due to door color.
(b) Assuming that there is no additional information on the purpose of the experiment, should specific hypotheses be tested by a multiple range test (Duncan's) or orthogonal contrasts? Perform the indicated analysis.
(c) Suppose now that someone told you that the purpose of the experiment was to see whether the color green had some special effect. Does this revelation affect your answer in part (b)? If so, redo the analysis.
The experimental medication of the placebo. Generate a 95% confidence interval for the difference in proportions of patients with hypertension between groups.
At the 0.01 level of significance, does the machine appear to be in need of maintenance and calibration? Determine and interpret the p-value for the test.
The probability that the speed will be more than 70 words per minute is 0.15. Find the mean and the standard deviation of typing speed.
In a recent poll, 126 people were asked if they liked dogs, and 6% said they did. Find the margin of error of this poll, at the 90% confidence level.
Would a reader's conclusion that the wilderness program is effective be based on one observational study, several observational studies
What is the probability that 10 or more were male? What is the probability that 10 or more were female? What is the probability that fewer than 7 were female?
The mean height of American women in their early twenties is about 64.5 inches, and the standard deviation is about 2.5 inches.
if you pick a card at random from a well-shuffled deck what is the probability that you get a spade or a
Formulate the hypotheses that could be used to determine whether the percentage of supermarket shoppers who believe that the supermarket Ketchup was as good as the national brand Ketchup differed from 64%.
an estimate of a population parameter that provides an interval of values believed to contain the value of the
Based on these data, what should the analyst conclude about whether the market for crude oil is efficient? Are conclusions valid only for the Rotterdam market?
A player in the Mega Millions lottery picks five different integers between 1 and 56, inclusive, and a sixth integer between 1 and 46, which may duplicate.
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