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41% of the doctors in America are dentists. If a random sample of size 826 is selected, what is the probability that the proportion of doctors who are dentists will be less than 40%?
An economist is interested in studying the incomes of consumers in a particular region. The population standard deviation is know to be $1,000. A random sample of 50 individuals resulted in an average income of $15,000.
a binomial probability is given. write the probability in words. then use a continuity correction to convert the
you have purchased five shares of stock in diversified machine tools which has a mean value of 25 and a standard
At higher organizational levels, the information technology tools used become more sophisticated. Yet, in many organizations, higher-level managers.
a car commercial advertises that a certain brand of car averaged at least 33 miles per gallon of gasoline. to verify
find the minimum sample size you should use to assure that your estimate of will be within the required margin of error
At a probability of type 1 error of 0.05, test the claim that the assistant professors earn more than $42000 per year. the standard deviation of the population is $5230.
Name two measures of proportion of variance. Which measure is the most conservative?
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..
The simple random sample is n = 14, σ = 12.5 and the original population is normally distributed.
Write three quadratic equations, with a, b, and c (coefficients of x2, x, and the constant) as:
What is the probability that on a given day that employee will either arrive late or leave early (or both)?
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