During one of the Kahana Resort’s “Trivia Nights,” 480 guests took the test on “Island Trivia.”  The test average was 120 points out of a possible 200 points, with all the scores normally distributed.  The standard deviation of the scores was 15 points.  Prizes worth $1,000 each were given to the guests scoring over 150 points. How much prize value was given out to guests taking this “Island Trivia” test?

Q: Contrary to popular opinion, a psychologist claims that the mean IQ score of math instructors ... is…

A:

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Q: For any population, the sum of the deviation scores will be always equal to zero. true or false

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A: Given data,Mean μ=60sd    σ=7 If Roberto scored 85z-score=?

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Q: A school district requires all graduating seniors to take a mathematics test. This year, the test…

A:

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Q: A class has an equal number of boys and girls. The boys all got 78% on a test and the girls all got…

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Q: On a multiple choice test with 10 questions, each question has four possible answers, one of which…

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Q: n which test did she perform better?

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A:

Q: on a nationwide math test,the mean was 63 and the standard deviation was 7. if roberto scored…

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Q: The mean grade of  Adrian in the final examination in mathematics was 85 and the standard deviation…

A: Mean for mathematics = 85 Standard Deviation for mathematics = 7 Mean for science = 89 Standard…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.