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100 students fails the final examination ( comprised of math, chemistry, physics and literature). 70 students fail in math, 75 students fail in chemistry, 85 students fail in physics, 85 students fail in literature, and x students fail in all the four subjects. What is the minimum value of x?
Suppose that in a random sample of 300 employed Americans, there are 57 individuals who say that they would fire their boss if they could.
This table shows the number of homicide victims in the United States in 2001 for four gender/race groups, as well as the total numbers (in thousands)
Question: Why are the requirements for a random sample so important for statistical analysis?
In order to study the effects of pharmaceutical and chemical agents on mucociliary clearance, doctors often use the ciliary beat frequency (CBF) as an index of ciliary activity.
Does this plot suggest the data are from a non-normal distribution? Justify your answer - obtained from different sellers, and the Brix/acid ratio was measured
A hospital laboratory has the task of screening blood samples of patients and producing a summary report for clinicians.
The Graduate Management Admission Council, who administers the test, claims that the mean total score is 529. Suppose a random sample of 8 students took the test, and their scores are given below. 699, 560, 414, 570, 521, 663, 727, 413 Use α = .05..
a) What is the probability that a randomly selected resident has neither pet? b) What is the probability that a randomly selected resident has a cat
What technique would you use to quantitatively assess (or hypothesize) whether this data behaves as a uniform distribution varying from 10 to 55?
For what proportion of patients will drug be effective for between 2 and 2.25 hours?
If it were found that meditators had lower-than-average blood pressures, can we conclude that meditation causes lower blood pressure? Explain.
The standard deviation of the sample was computed to be 2.1 calls. At the .05 level of significance, can we conclude that more than 40 calls are made on the average in a week?
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