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Probability of simple and compound events. A private college report contains these statistics:
70 percent of incoming freshmen attended public schools.
75 percent of public school students who enrol as freshmen eventually graduate.
90 percent of other freshmen eventually graduate.
a) IS there any evidence that a freshman's chances to graduate may depend upon what kind of high school the student attended? Describe.
b) What percent of freshmen eventually graduate?
We assume that the population is approximately normally distributed. Find the confidence interval: for a confidence level of 95%:
For a binomial probability experiment, with n=150 and p=.2, it is appropriate to use the normal approximation to the binomial distribution.
Find out the Optimum solution using the given data. Consider the following linear programming problem. Illustrate what is the optimum solution to this problem?
If garage is robbed, determine the probability doors were left open?
In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Research question: Are the ..
The standard deviation of the population of adult female height scores is 3 inches. A random sample of 50 women yields a mean height of 64 inches. Calculate the standard error of the mean.
The ideal number of children. "What do you think is the ideal number of children for a family to have?" A Gallup Poll asked this question of 1016 arbitrarily chosen adults. Almost half (49%) thought two children was idea suppose that p = 0.49 is e..
Compute an F-statistic for each linear construct and determine its significance. Also, state what questions each of these contrasts address.
Which of the following measures only the strength of a relationship?
Carry out F test for significance of straight line regression of Y on X and interpret your results.
The hypothesis that the samples came from identical populations cannot be rejected, the T value is 16.5 greater that the lower limit.
For which of given variables must a "two tail" t-test be applied?
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