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If the average income for workers in Canada (in 2010) is 32,200 CAD and the standard deviation is 47,000 CAD. What does this say about the distribution (of income)? Is it normally distributed? Why or why not? What conclusion can you make from this?
The mileage per day is distributed normally. Find the probablitly that a truck drives at least 133 miles in a day. Round your answer to 4 decimal places.
Over the 48 years from 1950 through 1997, the stock market has gone up in the month of January for 31 times; it has gone up for the whole year for 36 times, and it has gone up both for the year and in January for 29 times.
what are some other difference between test for independent groups and t test for matched groups? do they both use the
in a test of weight loss programs 198 subjects were divided such that 33 subjects followed each of 6 diets. each was
Identify the population parameter of interest in the survey. Give a point estimate of the population parameter. Set up H0 and Ha for testing whether the true percentage of TV viewers who find cable news to be better quality than network news differs..
What is the probability 2 of more randomly selected senators have the same birthday (100 senators).
1. a random sample of size 49 is drawn from a population with a standard deviation of 11. if only 18 of the time a
What is the probability that the industry will locate in both cities and in neither city?
A large population of metal rods have an average diameter of .943 inches with a standard deviation of .001 inches. The engineering specification for the rods requires that they be between .941 and .944 inches.
Construct a distribution to represent the population such that the survey result above may be seen as a sample from the population.
There is a very famous distribution that describes the frequency of the number of times a number comes up in a series of dice rolls, what is its name?
If it is determined that there is no difference between the population mean being represented by the sample and the mean of the population at large, then:
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