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A Nissan Motor Corporation advertisement read, "The average man's I.Q. is 107. The average brown trout's I.Q. is 4. So why can't man catch brown trout?" Suppose you believe that the brown trout's mean I.Q. is greater than four. You catch 12 brown trout. A fish psychologist determines the I.Q.s as follows: 5; 4; 7; 3; 6; 4; 5; 3; 6; 3; 8; 5. Conduct a hypothesis test of your belief.
What is the probability that none of these crimes will be solved? What is the probability that at least one of these crimes will be solved?
If a distribution of test scores is normal with a mean of 78 and a standard deviation of 11, what percent of the area lies below 60?
in an experiment 50 individuals were told that they had just purchased a ticket to a concert and 50 were told that they
A standard for full credibility of 1,000 claims has been selected so that the actual pure premium will be within 10% of the expected pure premium 95% of the time. The number of claims has the Poisson distribution. Determine the coeffcient of vari..
Merrill Lynch Securities and Health Care Retirement, Inc., are two large employers in downtown Toledo, Ohio. They are considering jointly offering child care for their employees.
Let Rev be the operator that reverses the sequence of characters within a string. For example, Rev(abc) = cba. Let R be any regular expression. Rev® is the set of strings denoted by R, with each string reversed. Is Rev(R) a regular set? Why?
How many questions must the test contain in order to reduce the standard deviation of Julie's proportion of correct answers to one-fourth its value for an 100-item test?
Estimate the proportion of low birth weight infants whose mothers experienced toxemia during pregnancy. Use 95% confidence level.
Find the margin of error for the 95% confidence interval used to estimate the population proportion. In a survey of 7100 T.V. viewers.
The percentage rates of home ownership for 8 randomly selected states are listed below. Estimate the population variance and standard deviation for the percentage rate of home ownership with 99% confidence level.
Find the mean and variance of . Then write a MATLAB program to estimate the PDF of .- Compare the estimated PDF with a Gaussian PDF of the same mean and variance.
a researcher is evaluating the effectiveness of a speed-reading course. a standardized test measuring both speed and
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