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Question: Sick cars. Twenty percent of cars that are inspected have faulty pollution control systems. The cost of repairing a pollution control system exceeds $100 about 40% of the time. When a driver takes her car in for inspection, what's the probability that she will end up paying more than $100 to repair the pollution control system?
a study of religious practices among college students interviewed a sample of 245 students 157 of whom stated they pray
If the population standard deviation is σ = 20 is the 6 point effect large enough to be statistically significant? Use the two - tailed test with α = .05
a new over-the -counter cold medication includes a warning label stating that it may cause drowsiness. a researcher
When a fisherman catches a fish, it is a young one with a probability of 0.23 and is returned to the water. On the other hand, an adult fish is kept to be eaten later.
a) Set up the null and alternative hypotheses, and perform the hypothesis test. b) Does the jury selection system appear to be fair?
if a sound is 100 times louder than a whisper how loud is that sound in
a teacher gives a reading skills test to a third-grade class of n 25 at the beginning of the school year. to evaluate
The same for each of the four quarters next year. The seasonal factor for the second quarter is 145. Determine the seasonally adjusted sales for the second quarter of next year.
McCullom's International Grains is constantly searching out areas in which to expand its market. Such markets present different challenges since tastes.
A game is played with a spinner on a circle, like the minute hand on a clock. The circle is marked evenly from 0 to 100, so, for example, the 3:00 position.
A Tire company has developed a new type of tire. Extensive testing shows that the number of miles the new tire will run before wearing out is normally distrubuted with a mean of 40,000 miles and a standard deviation of 4,000 miles
1.an experiment was performed to investigate lifetime of a component exposed to high heat. three different oven types
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