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A group of voters consists of 40 democrats, 30 republicans and 20 independents. A sample of 12 voters is chosen at random (without replacement) , find the probability that the sample contains at least one voter of each type.
One state lottery has 500 prizes of $1, 75 prizes of $15, 15 prizes of $100, 5 prizes of $450, 2 prizes of $1225, and 1 prize of 2500. Assume that 28,000 lottery tickets are issues and sold for $1. What is the lottery's expected profit per ticket?
a. what is the point estimate of the population mean? b. what is the point estimate of the population standard deviation?
The Wilcoxon signed rank test is computed for the data and gives a value W + = 161.5. Using the Normal approximation (without the continuity correction) the P-value.
1000 tickets for prizes are sold for $2 each. Seven prizes will be awarded - one for $400, one for $200, and five for $50. Steven purchases one of the tickets.
Identify a cam shaft, red, green and yellow (or any combination of these three colors) could not be used to identify another part. How many parts can the paint department code?
use the random variable x with values x 2 3 4 5 or 6 with px 0.05xa determine p x 4 b find p x gt or eq 4 c what is
Determine the probability that pregnancy will (a) last more than 300 days; (b) less than 240 days; (c) between 250 and 282 days.
Construct a less-than-cumulative frequency distribution of the data represented by the graph and calculate the probability that the consultant receives at least 2 calls during any 30 minute period.
Among 500 freshmen pursuing a business degree at a university, 347 are enrolled in an economics course, 247 are enrolled in a mathematics course, and 120 are enrolled in both an economics and a mathematics course. What is the probability that a..
In Part A of this assignment, you selected a random sample of 30 StatCrunch U students and created a StatCrunch file containing data from the above survey for those students. You will use the StatCrunch data file you created in Part A to complete thi..
What is your conclusion regarding null hypothesis?
Consider the many possible distributions of grades on a quiz in a statistics class; imagine that the grades could range from 0 to 100.
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