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A true/false pop quiz contains seven questions. What is the probability that when guessing, a student will get at least one question correct? (Round to the nearest hundredth)
_____
A) 1.00
B) 0.97
C) 0.50
D) 0.99
a study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 chevrolet cavalier shows that
A certain component is critical to the operation of medical device and must be replaced immediately upon failure. If the mean lifetime of this type of component is 100 hours and its standard deviation is 30 hours, how many of these components must..
Assume gasoline prices for a region are normally distributed. Do the data you obtained provide enough evidence to reject the claim?
A standard deviation of 350 hours. the manufacturer is considering a warranty. what proportions of the screens have a life between 1500 and 2500 hours?
suppose you will perform a test to determine whether there is sufficient evidence to support a claim of a linear
1.an experiment was carried out to assess the effects of four tomato varieties and four planting densities on yield.
The number of cell phone minutes used by high school seniors follows a normal distribution with a mean of 500 and a standard deviation of 50. What is the probability that a student uses fewer than 400 minutes?
if a machine disk slips the probability that the product is not acceptable is 0.74 overall 8 of the product from this
A researcher predicts that the percentage of people who do no watch TV is higher now than before the advent of the Internet. Let the p1 denote the population proportion of American adults in 1975 who reported watching no TV. Let p2 denote the corresp..
a set of observations follow a normal distribution with mean 40 and standard deviation 4. what proportions of
At 95% level of confidence, can we conclude that the babies using the Gibbs product gained less weight?
At 0.05 level of significance, is there evidence that proportion of claims processed under this new system is higher than article reported for previous system?
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