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1. A researcher reported that the mean or average age of participants was 22 and the standard deviation was
2. The youngest participant was 18 and the oldest participant was 28. Use this information to describe the distribution of ages. 17. If the range of ages was 40 (instead of 10), but the standard deviation remained constant, how would you describe the distribution?
Schadek Silkscreen Printing, Inc. purchases plastic cups on which to print logos for sporting events, proms, birthdays, and other special occasions. What is the estimated proportion defective in the population?
the time to failure of a battery in hours of a personal handheld music device follows an exponential distribution. the
Give an example of a study-real or hypothetical-in the social sciences that might display its data using the following types of graphs.
What data would we have to collect to be sure that the judges ratings meet the criteria for each type of reliability? Be sure to clarify how each type of reliability is different from the other types.
Mr. Schellburger, the CEO of Schellburger Oil, is facing a dilemma-he is not sure whether or not he should drill an oil well.
Identify the quality policy for a local company. Speculate how the policy focuses the efforts on a project in that company.
The study described in the previous exercise also measured the fasting plasma glucose of 16 diabetics who were given individual instruction.
An ordered stem and leaf diagram gives the scores of 71 students on an exam. Compute the mean, the median, and the mode.
The original concepts of analysis of variance came from the work of Sir Ronald A. Fisher, an English statistician. This technique, better known as ANOVA, has become one of the most commonly used research methods for testing differences among sever..
What do these different scores tell you about the tests in Weeks 1, 2, 3, and 4? What is happening to the students' scores over time?
Pedestrian Walk Buttons New York City has 750 pedestrian walk buttons that work, and another 2500 that do not work (based on data from "For Exercise in New York Futility, Push Button
in san francisco 30 of workers take public transportation daily usa today december 212005.in a sample of 9 workers what
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