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Problem 1. You toss a coin ten times and observe the sequence of heads and tails that results.
a. How many possible outcomes are there?
b. What's the probability that you will get at least one "heads"?
Problem. An urn contains 5 red, 6 blue, and 8 green balls. If a set of 3 balls is randomly selected, what is the probability that each of the balls will be?
a of the same color?
b. of different colors?Problem
Problem. An instructor gives her class a set of 10 problems with the information that the final exam will consist of a random selection of 5 of them. If a student has figured out how to do 7of the problems, what is the probability that he or she will answer correctly
a. all 5 problems?
b. at least 4 of the problems?
Perform a test of hypothesis to test the conjecture at the a = .01 level of significance.
Numerical Observations A set of numerical observations is obtained as described below. Classify each resulting data set as discrete or continuous.
Set the problem up in formal statistical terms and determine whether or not the researcher is correct.
Girls are needed to ensure that a 95% confidence interval estimate for the differncein mean BMI between boys and girls has a margin of error not exceeding 2 units?
In a random sample of 100 voters, what is the probability that the sample will indicate a dead heat (fifty-fifty)?
What is the calculated t value? Are the mean test scores of these two groups significantly different at the .05 level?
Why should none of R2, R ¯2, information criteria, and F tests be used to compare models with yt on the left hand side to models with ln yt instead?
To meet the increasing demand for new software products, many systems development experts have adopted a prototyping methodology. The effects of prototyping on the system development life cycle (SDLC) was investigated in the Journal of Computer In..
How many different meals can you order that consist of one main course, one beverage, and one desert?
A friend has driven a Toyota Camry for more than 200,000 miles with only the usual service maintenance expenses. Explain why not all Camry owners.
Select another sample. Refer to the previous exercise. Click on the "Reset" button and then on the "Sample" button. (a) Report the results of the new assignment
a given projects expected duration along its critical path is 25 days. management wants to know the probability that
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