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A psychologist interested in political behavior measured the square footage of the desks in the official office of four U.S. governors and of four chief executive officers (CEOs) of major U.S. corporations. The figures for the governors were 44, 36, 52, and 40 square feet. The figures for the CEOs were 32, 60, 48, and 36 square feet.
a) Figure the means and standard deviations for the governors and for the CEOs.
b) Explain, to a person who has never had a course in statistics, what you have done.
c) Note the ways in which the means and standard deviations differ, and speculate on the possible meaning of these differences, presuming that they are representative of U.S. governors and large corporations' CEOs in general.
With a single-sample t ratio, the null hypothesis states that:
In chi-square goodness-of-fit test when there is close agreement between observed frequency and expected frequency, chi-square test value will be small.
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Calculate the 95% confidence interval for the rate of positive tuberculin reaction separately for each of the two subpopulation, those with high exposure and those with low exposure.
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What is the probability that there will be more than three trucks either being loaded or waiting?
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The sampling distribution of mean score is approximately Normal. It has mean. What is its standard deviation?
After the presidential debates, a random sample of 1200 voters showed that 540 favored the Democratic candidate; 480 were in favor of the Republican candidate; 40 were in favor of the Independent candidate, and 140 were undecided. At a 1% level of..
At alpha = 0.05, is there enough evidence to conclude that proportions vary from those in the study?
Out of forty students, 14 are taking English Composition and 29 are taking Chemistry. If five students are in both classes, how many students are in neither class? How many are ineither class?
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