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Twelve cases of leukemia are reported in people living in a particular census tract over a 5-year period. Is this number of cases abnormal if only 6.7 cases would be expected based on national cancer-incidence rates?
Diagnosis tests of medical conditions have several results. The test result can be positive or negative, whether or not a patient has the condition.
On a very hot summer day, 5 percent of the production employees at Midland States Steel are absent from work. The production employees are randomly selected for a special in-depth study on absenteeism.
Find the probability of committing a type I error.
Based on these data, does it seem that strength of relationship between sales and promotions expenditures is enough to permit using linear regression forecasting model? Describe why?
When the names of all the students at Omega University were dropped to a fishbowl, they would include:
Based on this sample, is Moe correct in his assertion? Write up formal commentary of results of your test.
Probability using Z-score.Find the probabilities that a random variable Z having a standard normal distribution will take on a value.
The math SAT scores for all women are normally distributed with a mean of 496 and a standard deviation of 105.
The reason why we finish our calculation by dividing range by 4 is that in most data sets 95% of the data values fall within two standard deviations of the mean.
The sample standard deviation of the first set of strengths was 8.2 ksi, the second set's S value was 9.8 ksi, and the S value for the 25 differences in strengths was 3.3 ksi.
The current advertising campaign for a major automobile brand would be changed if fewer than 70 percent of the consumers like it.
If the test is positive, what is the probability that this person actually has heart disease?
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