Q: An auditor reviewed 25 oral surgery insurance claims from a particular surgical
An auditor reviewed 25 oral surgery insurance claims from a particular surgical office, determining that the mean out-of-pocket patient billing above the reimbursed amount was $275.66 with a standard...
See AnswerQ: A digital camcorder repair service has set a goal not to exceed
A digital camcorder repair service has set a goal not to exceed an average of 5 working days from the time the unit is brought in to the time repairs are completed. A random sample of 12 repair record...
See AnswerQ: (a) A statistical study reported that a drug was effective
(a) A statistical study reported that a drug was effective with a p-value of .042. Explain in words what this tells you. (b) How would that compare to a drug that had a p-value of .087?
See AnswerQ: Bob said, “Why is a small p-value significant
Bob said, “Why is a small p-value significant, when a large one isn’t? That seems backwards.” Try to explain it to Bob, giving an example to make your point.
See AnswerQ: The sodium content of a popular sports drink is listed as 220
The sodium content of a popular sports drink is listed as 220 mg in a 32-oz bottle. Analysis of 10 bottles indicates a sample mean of 228.2 mg with a sample standard deviation of 18.2 mg. (a) Write th...
See AnswerQ: A can of peeled whole tomatoes is supposed to contain an average
A can of peeled whole tomatoes is supposed to contain an average of 19 ounces of tomatoes (excluding the juice). The actual weight is a normally distributed random variable whose standard deviation is...
See AnswerQ: The cabin of a business jet has a cabin height 5 feet
The cabin of a business jet has a cabin height 5 feet 9 inches high. If a business traveler’s height is N(5’10”, 2.7”), what percentage of the business travelers will have to stoop?
See AnswerQ: At Ajax Spring Water, a half-liter bottle of soft
At Ajax Spring Water, a half-liter bottle of soft drink is supposed to contain a mean of 520 ml. The filling process follows a normal distribution with a known process standard deviation of 4 ml. (a)...
See AnswerQ: On eight Friday quizzes, Bob received scores of 80, 85
On eight Friday quizzes, Bob received scores of 80, 85, 95, 92, 89, 84, 90, 92. He tells Prof. Hardtack that he is really a 90+ performer, but this sample just happened to fall below his true performa...
See AnswerQ: Faced with rising fax costs, a firm issued a guideline that
Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be sent by 2-day mail instead. Exceptions are allowed, but they want the average to be 10 or below....
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