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Define a constructor make-center-percent that takes a center and a percentage tolerance and produces the desired interval. You must also define a selector percent that produces the percentage tolerance for a given interval. The center selector is the same as the one shown above
question the gallup organization contacts 1709 adult men who are 40 to 60 yrs of age and live in the united states
a group of voters consists of 40 democrats 30 republicans and 20 independents. a sample of 12 voters is chosen at
Ailín is the recently appointed purchasing manager of firm manufacturing folding bicycles.
The city council of Pine Bluffs is considering increasing the number of police in an effort to reduce crime. Before making a final decision,
two random variables x and y have the joint distribution p0 0 0.2 p0 2 0.3 p1 1 0.1 p2 0 0.3 p 2 2 0.1 and px y 0
Let T denote the length of time that we have to wait, after we start our observation, for an occurrence. Have your program keep track of T. What is an estimate for the average value of T ?
estimating confidence interval for mean value of y dependent variable.consider the simple linear regression of y
In other words, could you generate two sets of random numbers (of length, say, 50) and set out the calculations in detail to determine whether the random variables are independent using chi-squared.
Is there evidence that a stock split causes excess returns for the month following the split? Redo the problem, using the sign test. Compare the results of the sign test with those of the Wilcoxon test.
your firm which sells a technologically advanced product directly to consumers has developed a new website that has a
The following data from a sample of 100 families show the record of college attendance by fathers and their oldest sons: in 22 families, both father and son attended college; in 31 families, neither father nor son attended college; in 12 families,..
1. Develop histograms showing the distribution of rivet diameters from the original and new supplier. 2. Compute the sample means and standard deviations for the two sets of data.
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