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Suppose a batch of metal shafts produced in a manufacturing company have a standard deviation of 1.3 and a mean diameter of 202 inches. If 70 shafts are sampled at random from the batch, what is the probability that the mean diameter of the sample shafts would be less than201.9inches? Round your answer to four decimal places.
radovilsky manufacturing company in hayward california makes flashing lights for toys. the company operates its
a study of fast-food nutrition compared the caloric content of french fries. thirty-eight randomly selected servings of
The strength of 30 insulators are in the file. Please help with the below questions: Construct a frequency distribution and a percentage distribution.
an accounting professor is notorious for being stingy in giving out good letter grades. in a large section of 140
A marketing firm asked a random set of married and single men as to how much they were willing to spend for a vacation. At = .05, is a difference in the two amounts?
The records of a casualty insurance company show that, in the past, its clients have had a mean of 1.8 auto accidents per day with a variance of 0.0016.
The length of time that an individual talks on a long-distance telephone call has been found to be of a random nature. Let X be the length of the talk; assume it to be a continuous random variable with probability density function given by f(x) = ..
In a series of tests, the piece was let operate till failure, repaired immediately, and let operate till next failure and so on for 3 months. The total number failures observed were 3.
find the number of chocolate chips a cookie should contain on the average if it is desired that the probability of a
left-handedness frank suggest that being a south-paw is gender-related. test franks assertion at a 5 level test of
over half of all american teens ages 12 to 17 years have an online profile mainly on facebook. a random sample of 491
find a formula for the probability distribution of the random variable x representing the outcome when a single die is
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