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An experimental test to detect a particular type of cancer indicates the presence of cancer in 90% of individuals known to have this type of cancer, and in 15% of individuals known to be cancer-free (false positive). One hundred individuals volunteer to take the test. Of the 100, 60 are known to have the cancer, and 40 are known to be cancer-free. If the test indicates that one of the individuals, randomly chosen, has the cancer, what is the probability that he or she is actually cancer-free?
Egyptians watch an average of 2.5 hours of television per person per day. If the standard deviation for the number of hours of television watched per day is 1.6 and a random sample of 225 Egyptians is selected, the mean of this sample belongs to a..
The normal serum hemocrit level is 0.41 milligrams to 100 milligrams of blood. The level in elderly patients is significantly low at 0.31.
the piron software company currently develops marketing software for primarily service-based organizations. from a
1. create the data set.a. using the activity 6a.sav file as a starting point create a new dataset that you can use with
why is it popular for advertisments to always state a confidence interval? give an example of where you have seen
an e-commerce web site claims that 6 of people who visit the site make a purchase. answer the following questions based
When only the value-added time is considered, the time it takes to build a laser printer is thought to be uniformly distributed between 8 and 15 hours.
Calculate the horizontal component of the initial velocity of the shell.
Obtain a test statistic and p -value. Interpret the results at α = .01.
Has the average community level of suspended particles for the month of August exceeded 30u/m3?
a wildlife study has found that a wolf pack is successful in killing one large animal for every 12 that it chases.a
Plasma glucose levels are used to determine the presence of diabetes. Suppose the mean in (plasma-glucose) concentration (mg/dL) in 35-44 year olds is 4.86 with standard deviation = 0.54.
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