Mathematics, 13.03.2020 00:55, gildedav001
Extensive experience with fans of a certain type used in diesel engines has suggested that the exponential distribution provides a good model for time until failure. Suppose the mean time until failure is 20,000 hours. What is the probability that
a. A randomly selected fan will last at least 20,000 hours? At most 30,000 hours? Between 20,000 and 30,000 hours?
b. The lifetime of a fan exceeds the mean value by more than 2 standard deviations?
c. What is the life expectancy of the median fan life?
Answers: 3
Mathematics, 21.06.2019 13:50, floverek
Avegetable garden and a surrounding path are shaped like a square together are 12 ft wide. the path is 1 feet wide. if one bag of gravel covers 8 square feet, how manu bags are needed to cover the path? round your answers to the nearest tenth.
Answers: 1
Mathematics, 21.06.2019 21:30, Joejoe1813
Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?
Answers: 1
Mathematics, 22.06.2019 01:30, alyssaboosiefkes
Im so bad at fractions they are not my best math thing to work on
Answers: 3
Extensive experience with fans of a certain type used in diesel engines has suggested that the expon...
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