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A pharmaceutical company has developed a screening test for a rare disease that afflicted 2% of the population. Unfortunately, the reliability of this test is only 80%, which means that 20% of the tested will get a false positive. If a subject is tested positive based on this test, what is the probability that he has the disease?
Draw the distribution of the random variable X, representing her time of arrival. (Be sure to include labels and values on the axes.)
At the .01 significance level, can we conclude that the 30-yeer mortgage rate for small banks is less than 6 percent? Estimate the p -value.
Use the following data to write the normal equations of the linear regression between Y and X, and find the least squares regression.
At the end of 24 weeks of treatment, subjects were classified as responders or non-responders to treatment based on a battery of psychological tests.
In chi-square goodness-of-fit test when there is close agreement between observed frequency and expected frequency, chi-square test value will be small.
In a binomial distribution n = 8 and π = 0.2. Determine the probabilities of the following events.
Show the graph of the probability density function for flight time.
The following is the number of minutes to commute from home to work for a group of automobile executives.
Assuming the sigma of 200 was actually the standard deviation for the sample, recalculate the interval estimate. Discuss how this changed your result from that in part b.
You are estimating the cost ($K) of optical sensors based on the power output of the sensor. Using the preliminary calculations from a data set of 8 sensors, determine the equation of the line. (Round your intermediate calculations to 3 decimal pl..
Strongly support, support, no opinion, do not support, strongly do not support. The number of people in each category was recorded.
In performing the symmetric approximation, you calculate a mean of the total system cost as $1,725K. The variance is 22500. The POE is $1,600K.
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