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The length of time between breakdowns of an essential piece of equipment is important in the decision of the use of auxiliary equipment. An engineer thinks that the best "model" for time between breakdowns of a generator is the exponential distribution with a mean of 15 days.
a) If the generator has just broken down, what is the probability that it will break down in the next 21 days?
b) What is the probability that the generator will operate for 30 days without a breakdown?
From Group of 40 People, a jury of 12 people is selected. In how many various ways can a jury of 12 people be selected?
Two sets, and 18% have three or more sets. If two households are chosen at random, what is the probability that at least one has a television set?
Compute the 95% confidence interval for the population proportion of registered voters who favor the slow growth initiative.
Estimate a multiple regression model using revenue as your dependent variable. For independent variables, include population, average income, screens, theatre age, and dummy variables for mall and strip mall.
Which of the following would NOT be considered and potential pitfall for a researcher? Unconscious bias on the part of the researcher
A mean of 200 and a standard deviation of 20. Determine the number of boxes,x, where 80% of the number of boxes received is less than x.
The Average GPA is known to be 2.67 with standard deviation = 0.58. What GPA will a student need to have to be admitted to the Tech school?
Biologists suspect that male wolves are more likely than females to return to an area where the population has been greatly reduced.
First side effect is observed. Use the formula for the sum of a geometric sequence to show that the probabilities in the probability distribution table add to 1.
Convert Alisha's grandmother's score to a z score among the distribution of exercise capacity in Americans over seventy years old. Who has a relatively longer exercise capacity compared to her peers-Alisha or her grandmother?
What is the probability that the student is married, given the student was female? Your answer should be a decimal fraction accurate to 3 decimal places.
The Atlanta Convention & Visitors Bureau just released a report on the percentage of available hotel rooms in Fulton County that were rented (occupied) in 2003.
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