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An instructor gives his class a set of 13 problems with the information that the next quiz will consist of a random selection of 3 of them. If a student has figured out how to do 9 of the problems, what is the probability the he or she will answer correctly
(a) All 3 problems?
(b) At least 2 problems?
When trying to understand the stroke data, what would be the advantage of looking at a histogram instead of this frequency distribution?
In a large western university, 15% of the students are graduate students. If a random sample of 20 students is selected, what is the probability that the sample contains:
State which of the three diet colas (marked as A, B or C) he or she prefers. Draw a tree diagram depicting the sample space outcomes for the test results.
The supplier agrees they will deliver on the day the order is placed. Note that the basic unit of measurement for a period is one year in this case.
We want to test a hypothesis at the .01 level of significance. Based on your computations, would we reject or fail to reject the null hypothesis?
"Factorial" means that the treatments are formed from more than one factor. What are the factors? What do "double-blind" and "placebo-controlled" mean?
we know many types of data fall into a normal distribution with most of the observations falling toward the middle.
using one mean t test to determine whether or not to support the claim.the t-test ia another hypothesis test that works
Area to right of mean of normal probability distribution is?
A random sample of five observations from the first sample resulted in a standard deviation of (12). A random sample of seven observations from the second sample gave a standard deviation of (7) at the (.01) significance level.
Assume that 5% of men and only .25% of women are colorblind. A colorblind person is chosen at random:
There are 6 different factors labeled as A, B, C, D, E, and F. Given that D=AB, E=-AC, F=-BC, please provide the corresponding 26-3 design table. Also, please write down the complete defining relation and the complete effect alias structure.
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