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A college claims that the average loan debt for undergraduate students upon graduation is $30,000. You conduct a hypothesis test where you conclude the average loan amount exceeds $30,000. which hypothesis test decision error could you have made, and explain that possible error as it relates to this particular hypothesis test.
for the independent-measures t statistic if other factors are held constant increasing sample variance will the
What is the probability that next years annual maximum negative return exceeds all previous negative returns? In other words, what is the probability that next years maximum negative return is a new record?
When a sample mean is greater than the true, population mean, the resulting difference is called:
The sample of 200 voters and tests Ho: P=0.5 versus H1:P(not equal)0.5 at 5% level. What is the power of the test if the true value of P is 0.55?
according to a website about salaries the national average salary as of october 2003 for a human resources clerk was
Repeat several times and see how widely the results vary. Try sample size 10000 to see if the variation does become smaller.
A group of 12 hemophiliacs, all under 41 years of age at the time of HIV seroconversion, were followed from primary AIDS diagnosis until death (ideally, we should take as a starting point the time at which a person contracts AIDS rather than the t..
New population of pilots has normally distributed weights with mean of 128 lb and standard deviation of 31.7 lbs. If the pilot is randomly selected, determine the probability that his weight is between 120 lb and 181 lb.
Robinson & Associates performs employment screening for large companies in southern California. It usually follows two-step process. First potential applicants are given a test that covers basic knowledge and intelligence. If applicants score b..
Determine a simple algebraic relationship between the negative binomial probability P(x) and the binomial probability for the probability of n successes in x trials.
The marketing manager of a large supermarket chain would like to determine the effect of shelf space (in feet) on the weekly sales of international food (in hundreds of dollars). A random sample of 12 equal -sized stores is selected, with the foll..
d. Compare the value of SSE for the least squares line to that of the two lines you found in part b. What principle of least squares is demonstrated by this comparison?
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