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1. When trying to detect outliers, discuss the relative merits of using a histogram versus a boxplot.
2. A sample histogram indicates that the data are highly skewed to the right. Is this a reliable indication that if all individuals of interest could be measured, the resulting histogram would also be highly skewed?
There are seven cards with digits 0,1, 2, 3, 4, 5, and 6. A child takes four of the cards and places them in some order. What is the probability that he obtains a four-digit number less than 3265?
1. At the beginning of the chapter, I made the comment, "Traditionally, one of the ways in which people learn Unix is by having a good time while they are learning." This is usually not the case with other operating systems, such as Microsoft Wind..
assume that any single labrotory test in a 3 test battery obtained from healthy volunteers has a 5 chance of falling
a company wants to find the average weight of its products. a large initial sample shows the standard deviation of the
A statistics practitioner conducted a two-factor analysis of variance experiment with a =4, b = 3, and r = 8. The sum of squares are listed here:
for women age 25-34 with full-time jobs the average income in 2004 was 32000 and the sd for income was 26000. assuming
Suppose you randomly draw two cards from a standard deck without replacement. What is the probability that neither card is the ace of spades?
Twitter users and news, Part I: A poll conducted in 2013 found that 52% of U.S. adult Twitter users get at least some news on Twitter (Pew, 2013). The standard error for this estimate was 2.4%, and a normal distribution may be used to model the s..
suppose a certain species of fawns between 1 and 5 months old have a body weight that is approximately normally
At the 5% level of significance, can we infer that branch A has a significantly higher proportion of satisfied customers than branch B?
in a company emails sent from one employee to another are tracked as follows mr. cooper sends 3 emails to mrs. sanders.
a graduate course has 3 biology students and 4 chemistry students. a sample of 2 students is randomly selected from
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