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Probability using Uniform distribution.
Find out Pr(X1, X2 < 2) where X1 and X2 are independent and each has the uniform distribution over the interval (1, 2).
Statistics and Probability, Statistics
1. Under what conditions is the median a more meaningful measure of central tendency than the mean? 2. Why do researchers prefer the standard deviation as a measure of variability over the range?
What was the highest point of the pope's power and what was the lowest point?
In one town, 24% of all voters are Democrats. If two voters are randomly selected for a survey, find the probability that they are both Democrats. Round to the nearest thousandth if necessary.
Records show that 13% of all college students are foreign students who also smoke. It is also known that 25% of all foreign college students smoke. What percent of the students at this university are foreign?
Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. Round to three decimal places. n=74, x=12; 95% confidence.
What three criteria must be met to establish that one variable causes changes in behavior? Which of these criteria are met by quasi-experimental designs? Which of these criteria are not met, and why?
Answer the following questions showing all work. 1. Using http://onlinestatbook.com/stat_sim/sampling_dist/index.html, select a population distribution that is NOT normal (i.e., heavily skewed, uniform, bimodal). Using t ...
1. Describe a 2 x 2 x 3 factorial design. How many independent variables are involved, and how many levels are there of each variable? How many experimental conditions are in a 2 x 2 x 3 factorial design? 2. Distinguish ...
Roger reports: I ascribe probability 0.3 to "the Philadelphia Phillies will win the World Series next year, Chris ascribes probability 0.4 to their winning the World Series and to me ascribing probability 0.4 that they w ...
1. What can researchers do to minimize error variance? 2. Discuss the trade-off between internal and external validity. Which is more important? Explain.
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