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Consider a machine with exponential reliability model. Assume that the breakdown rate is 1 and the repair rate is 2. Calculate the probability that the machine is up for more than 10 units of time. Calculate the probability that the machine is down for less than 3 units of time.
The IQs of 17 students from one area of a city showed a mean of 106 with a standard deviation of 10, whereas the IQs of 14 students from another area showed a mean of 109 with a standard deviation of 7.
What assumption tests should be used? A fifth grade science teacher want to know if there is a relationship between final exam scores and overall course points after adjusting for a quiz score.
If the measurements were made in centimeters rather than inches, what would be the value of the correlation coefficient?
What percentage of the overall sample did not smoke and had not ever been divorced?- Determine a complete set of row percentages.
a survey of adults ages 18-29 found that 82 use the internet. you randomly select 196 adults ages 18-29 and ask them if
A researcher wishes to study the effect of a new drug on blood pressure. Consider and discuss the following questions as you respond:
Suppose that the waiting time for a bus, in minutes, has the uniform in (0, 10) distribution. In five months a person catches the bus 120 times.
The company further estimates that the probability that the legislation will pass is 0.75. If the company should find that the relevant legislation just passed, what is the probability that authorization to visit the port will be granted?
Based on your answer to part (b) in the previous exercise, how many students should the registrar email
Assume that the annual rate of return for a common biotechnology stock is normally distributed with a mean of 5.5% and a standard deviation of 6%.
Use the Empirical Rule to complete each sentence About 68% of college students typically sleep between and hours per night.
a random variable x has a probability density function fx 2x for 0 lt x lt 1.find the difference between 10th
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