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Prior to being hired, the five salespersons for a computer store were given a standard sales aptitude test. For each individual, the score achieved on the aptitude test and the number of computer systems sold during the first 3 months of their employment are shown here.
Determine the least-squares regression line and interpret its slope. Estimate, for a new employee who scores 60 on the sales aptitude test, the number of units the new employee will sell in her first 3 months with the company.
A student is taking a 10 question multiple choice quiz. There are four possible answers to each question. The student decides to guess at random on all 10 questions.
Random sample from population of male runners in town or city. Create and interpret the 95% confidence interval for mean, mean of the population from which sample is drawn.
Let T1, T2, ... denote the interarrival times of events of a nonhomogeneous Poisson process having intensity function λ(t).
In a survey, Fortune rated companies on a 0 to 10 scale. A random sample of 10 firms and their scores is as follows.- Construct a 95% confidence interval for the average rating of a company on Fortune's entire list.
how often do you have to toss a coin to determine pheads within .1 of its true value with probability at least
An issue that faces individuals investing for retirement is allocating assets among different investment choices. A study conducted 10 years ago showed that 65% of investors preferred stocks to real estate as an investment.
Construct a misleading graph that a college recruiter might create to convince high school students that they should attend college. Construct a graph that does not mislead.
In calculating a required sample size for estimating a population proportion, what would cause the sample size to increase? What would cause it to decrease? How would you explain the relationship between the significance level and the required sam..
prepare a 2 slide microsoft powerpoint presentation with speaker notes how to use a z-test to test the null hypothesis
suppose a manufacturing company makes a certain item. the time to produce each item is normally distributed around a
What is the difference between the standard deviation, standard error of the mean, and standard error of the estimate? Discuss and offer examples.
What other summaries of the mutual fund's rate of return are of importance to a person selecting a retirement plan?
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