The following list shows how many text messages Elyse sent e…
The following list shows how many text messages Elyse sent each day for the last 10 days. 21 22 24 26 26 29 32 32 33 88 Elyse wants to determine the typical number of text messages and the variability in the number of text messages she sends each day. a) Which measure of location better describes the typical number of text messages sent per day? [location] b) Which measure of spread better describes the variability in the number of text messages sent per day? [spread]
Read DetailsSuppose the diagram of an electrical system is as shown. Th…
Suppose the diagram of an electrical system is as shown. The number in each box is the probability the component works. What is the probability that the system works? Assume the components behave independently. Enter your numeric answer as a decimal. Do not round.
Read DetailsA company advertises a mean lifespan of 1000 hours for a par…
A company advertises a mean lifespan of 1000 hours for a particular type of light bulb. If you were in charge of quality control at the factory, would you prefer that the standard deviation of the lifespans for the light bulbs be 5 hours or 50 hours? Why?
Read DetailsIn testing a certain kind of truck tire over rugged terrain…
In testing a certain kind of truck tire over rugged terrain, it is found that 40% of the trucks fail to complete the test run without a blowout. (Assume blowouts on different trucks are independent events.) (a) If 16 trucks are tested, how many of them would you expect to have blowouts? [blanka] (b) What is the variance of the number of blowouts experienced by 16 trucks? [blankb] (c) What is the probability that among 16 trucks, there are more than 5 blowouts. [blankc]
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