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Thirty percent of American parents allow their children under age 13 to stay home alone after school. (Source: United States Department of Labor, Washington, D.C., 1994). Three parents are randomly selected. Let x be the number of these parents who allow their children under age of 13 to stay home alone after school. Find the probability distribution of x.
A student is selected at random to represent the school at a conference. The probability that the selected student is a liberal arts major is what?
The manager fo the Petroco Service Station wants to forecast the demand for unleaded gasoline next month so that the proper number of gallons can be ordered from the distributor. Compute the two forecast by using MAPD and indicate which seems to be..
the shell of the land snail limocolaria martensiana has two possible color forms. streaked and pallid. in a certain
According to the National Football League, the average salary for players for the 2010 season was about $1.9 million while the median salary is around $770,000. Why are both numbers reported? What might the difference between the two statistics me..
Based on the earnings below, is there sufficient evidence to conclude, at the 99% level of confidence, that one of these divisions is more profitable than the others? Calculate the mean square for factor, and the mean square for error.
Choose any medical scientific study who applied a Bayer Theorem and write down the article information (title, author, location, and date) of the article
The following data was randomly drawn from a normal population. At an alpha level of .05, does the mean of the population differ significantly from -150. Use Excel.
sparr investment inc. specializes in tax-deferred investment opportunities for its clients. recently sparr offered a
How long is the time to expected replacement for a customer who has owned a vehicle 6.5 years and calculate .95 and .99 confidence intervals and explain your results.
The life expectancy of Timely brand watches is normally distributed with a mean of four years and a standard deviation of eight months.
For the other 25 percent of the population, the drug has no effect on colds. If an individual tries the drug for a year and has 2 colds in that time, what is the probability that the drug is beneficial to that individual?
The standard deviation of the distribution of means of change scores is 2.0 and the mean change score for the sample studied is an increase of 5.2. What is the t score?
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