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The mean weight of trucks traveling on a particular section of I-480 is not known. A state highway inspector needs an estimate of the mean. He selects a random sample of 49 trucks passing the weighing station and finds a mean of 15.8 tons, with a standard deviation of the sample of 4.2 tons. What is the probability that a truck will weigh less than 14.3 tons?
market researcher gartner dataquest reports that dell computer controls 27 of the pc market in the united states.
one of four coins is countefeit and is either too heavy or too light.the problem is to identify the counterfeit coin
What is the difference between the critical-value method and the p-value method of hypothesis testing? Include in your post how the question's topic pertains to your health discipline.
Suppose that the number of cars, X, that pass through a car wash between 4:00pm and 5:00pm on any sunny Friday has the following probability distribution:
A sample of 400 bags of dog food which are advertised to contain twenty-five pounds had a mean content weight of 24.5 pounds with a standard deviation of 3 pounds.
suppose the equation of the regression line for the debt per capita for the years 1990-2001 is computed to be debt per
Same survey showed that average length of time each store was in business in 6 years, with standard deviation of 2.5 years. Which is more variable, number of magazines or number of years?
if the correlation coefficient r is equal to 0.362 find the coefficient of
Suppose we wish to conduct a survey of adult US voters about whether or not they intend to vote for an incumbent in congress in the next election. Suppose that we survey 1000 people and 230 say they will.
a random survey of autos parked in student and staff lots at a large university classified the brands by country of
If the random sample of 16 men does result in a mean score of 590 is there strong evidence to support the claim that the course is actually effective? why or why not?
the number of christmas trees sold by a shop during the month of december is a discrete uniform random variable having
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