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Probability based on binomial distribution.
1 Suppose that P(E) = 0.76, P(F) = 0.45, and P(E and F) = 0.32. What is P (E or F)?
2 Suppose that events E and F are independent. In addition, P(E) = 0.45 and P(F) = 0.2. what is P(E and F)?
3 Suppose that P(E) = 0.59 and P(F\E) = 0.45 What is P(E and F)?
4 Given the same values n=20, p=0.6, and x=17, compute the probability of x successes in the n independent trials of the experiment.
Relatively speaking, who performed better on the test, you, with an 86, or your friend? Why?
he population consists of all 15 year olds living in the attendance district of a local high school. You plan to obtain a simple random sample of 200 such residents by using the roster of the high school as the sampling frame.
They are thinking of introducing a new flavour, maple-marshmallow Frumpies, and want to know whether children will prefer the new flavour to the old one. Design a completely randomized experiment to investigate this question.
Using the z table in Table E of Appendix C, what are the critical values for a two-tailed test when a = 0.03 .
If life of wild pheasants follows a normal distribution with a mean of 9 months and a variance of 9, what percent of the population will be less than 11 months of age.
Why is cumulative relative frequency distribution so much more informative that just relative frequency distribution? Use examples to explain these differences.
What was the critical F value chosen?
Illustrate what does weighting add to usefulness of moving averages and explain how is it done. The yield on a thirty year treasury note at the end of every year since 1990 is recorded below.
In an analysis of variance problem involving 3 treatments and 10 observations per treatment, SSE = 399.6. The MSE for this situation is:
If absolute value of test statistic is less than critical value in hypothesis test decision is to?
A random sample of 48 managers of large hotels has mean X‾= 5.91. The null hypothesis for the researcher's test is?
Give an example of a hypothesis test. State what the Null and the Alternative hypotheses.
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