If the sample mean is much larger than the sample median, the data set is said to be skewed to the right.
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Q. 2In testing a new drug, researchers found that 5 of all patients using it will have a mild side effect. A random sample of 11 patients using the drug is selected. Find the probability that exactly two will have this mild side effect.
Q. 3The population mean, , is used to estimate the sample mean, .
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Q. 4A manufacturer of matches puts 100 matches in each box of matches produced. One-tenth of one percent of the matches produced has flaws. If a box is randomly selected, what is the probability that it will have one or fewer matches with a flaw?
Q. 5Two classes, one with 15 students and the other with 25 students, took the same test and averaged 85 points and 75 points, respectively. If the two classes were combined, the overall average score of the 40 students would be 80 points.
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Q. 6Thirty percent of hospital admissions for diabetic patients are related to problems with the kidneys. In a sample of 10 diabetic hospital admissions, what is the probability that none will be for a kidney problem?
Q. 7Numerical descriptive measures computed from sample measurements are called statistics.
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Q. 8Let x represent the flip upon which a head first occurs when a coin is flipped repeatedly. Find the probability that x is equal to or greater than 4.
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