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A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1-hour flight is .02. What is the probability that:
(a) Both will fail?
(b) Neither will fail?
(c) One or the other will fail?
Show all steps carefully.
Twelve doctor's offices were given 3 lab inspections with the following results:
Examine the relationship between final grade and the reported hours per week each student said they studied for the course. Do we have evidence that females are being discriminated against?
Using What's Best! (Or solver) find the least-cost matrix.
Compute mean and standard deviation for sample of N = 8 females and sample of N = 8 for males.
Develop three regression models to predict the selling price based upon each of the other factors individually. Which of these is best?
Conditional and compound probabilities.The table below gives the distribution of blood types by gender in a group of 1000 individuals.
Is there evidence that the population mean is above $300, if X (bar) = $305.11 and s = $43.20?
Which component of a time series is most likely to occur? Which component has a pattern that must be complete in a single year and repeat from year to year?
Perform a posthoc test that is suitable if we assume that group 7 is a control group and that the other are different treatment groups and that we are only interested in finding significant treatments, not to compare them.
A university found that 20 percent of its students withdraw without completing the introductory statistics. Assume that 20 students registered for the course.
Determine for each variable if it is the explanatory variable, the response variable, or whether it could be both.
Does the data prove a significant difference in mean times?
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