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You want to estimate the average weight of bull riders in the US. So you have drawn a random sample of 100 from the population of 1000 bull riders. You found from the sample of 100 that average weight is 68 kg and standard deviation ( SD ) to be 17 kg. What is the 90% confidence interval?
(Constrained Max-Flow Problem) Consider the max-flow problem of Chapter 3 with the exception that there is a single side constraint of the form where aij and b are given scalars. Relate this problem to the min-cost flow problem of minimizing
please answer this question using r code. the answer for this quesiton can be easily be found with a google search
Compute the characteristic function of a random variable X that has as its probability law (i) the binomial distribution with mean
Of three cards, one is painted red on both sides; one is painted black on both sides; and one is painted red on one side and black on the other. A card is randomly chosen and placed on a table. If the side facing up is red, what is the probability..
Use the normal distribution to approximate the following probability: According to the most recent Davenport student profile, 47% of students have children under 17 living at home with them.
Do women and men have different opinions about affirmative action? Based on a sub sample of 2008 GSS, the output figure below shows respondent's sex (sex) and attitudes toward affirmative action (DISCAFF: Are whites hurt by affirmative action).
Dealing with a large collection of categories complicates a regression, and software does not always provide the needed tools. The following procedure is often helpful.
a presidential election poll shows one candidate leading with 60 of the vote. if the poll is taken from 200 random
State hypotheses, find the test statistic and critical value, and state conclusion. (3 decimal round)
an instructor gives his class a set of 13 problems with the information that the next quiz will consist of a random
a system used to read electric meters automatically requires the use of a 128-bit computer message. occasionally random
The margin of error for a sample size 25 is +-3. Will the margin of error be greater or less if the sample size is 400? What is the new margin of error?
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