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An investment counselor calls with a hot stock tip. He believes that if the economy remains strong, the investment will result in a pro?t of $50,000. If the economy grows at a moderate pace, the investment will result in a pro?t of $20,000. However, if the economy goes into recession, the investment will result in a loss of $50,000. You contact an economist who believes there is a 20% probability the economy will remain strong, a 70% probability the economy will grow at a moderate pace, and a 10% probability the economy will slip into recession. What is the expected pro?t from this investment?
With regard to quality control guidelines, will the manufacturer be satisfied with the results of a test of hypothesis based on the sample data?
Given the standard normal distributions shown below, what is the probability of the shaded areas, express as a z-score
What is the variance of the number of days absent - Compute the variance and standard deviation of a probability distribution and What is the probability of passing at least one?
Using your own words, tell me what the difference is between a normal distribution and a standard normal distribution.
The length of pregnancies in a small rural village are normally distributed with a mean of 265 days and a standard deviation of 15 days.
a student is taking a multiple-choice test in which each question has four possible answers. she knows the answers to 5
it is assumed that the time failures for an electronic component are exponentially distributed with a mean of 50 hours
Explain the tests themselves, your results, and then discuss the implications of the questionnaire findings and show how these relate to how you learn. You need to think about the connections between the test results and yourself as a learner plus..
The disk file cancer contains values for breast cancer mortality from 1950 to 1960 (y) and the adult white female population in 1960 (x) for 301 counties.
The data table compares women who viewed television violence with those who did not, in order to study the differences in physical abuse of the spouse.
a. Calculate AOQ for p = .01, .02,..., .10. What does this suggest about the value of p for which AOQ is a maximum and the corresponding AOQL?
Is this correlation statistically significant? He also found the regression coefficient to be -1.66. Is this regression coefficient statistically significant? Explain why or why not for each.
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