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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.
The thickness of metal plates made by a particular machine are normally distributed with mean of 4.3 mm and standard deviation of .0.12 mm. What is the value of c for which there is 80% probability that a metal plate has a thickness with in the in..
Determine standardized test statistic z and its corresponding area. If convenient use technology. z=( ) round to two decimals. Area= ( ).
Describe a research problem that would benefit from Factor Analysis. What are the variables and what would you hope to achieve?
The probability is 1 in 4,000,000 that a single auto trip in the United States will result in a fatality. Over a lifetime, an average U.S. driver takes 50,000 trips. (a) What is the probability of a fatal accident over a lifetime? Explain your rea..
Cards are drawn one by one from a standard deck of 52 cards. Let X be the number of draws up to and including when the first diamond is drawn. If the cards are replaced in the deck, determine E(X). If the cards are not replaced in the deck, determ..
Select either the Least Squares Method, the Moving Average Method, or the Weighted Moving Average and provide step-by-step instructions you would employ to plot the associated trend line.
Identify at least TWO EXAMPLES of time series data. You may find it necessary to consider how your organization(s) have utilized time series data to "forecast".
The professors mentioned, he was determined to find the correct answer and make a correction during a future broadcast. What are the chances of getting 15 days of rain during the next 30 days?
The data are reported in thousands of dollars. The following data represent a ransom sample from the study. Compute the sample correlation coefficient r. Give a brief explanation of the meaning of this value.
Determine the margin of error in estimating the population mean. a sample of 68 college students yields a mean annual income of $3248.
Demonstrate your understanding of choosing the type of regression model to the given data, by explaning three factors that should be taken into account in the choice between different models.
What type of error would result in that case? Respond to at least two of your classmate's postings.
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