Mathematics, 26.08.2019 16:20 achsahjosey
Afactor in determining the usefulness of an examination as a measure of demonstrated ability is the amount of spread that occurs in the grades. if the spread or variation of examination scores is very small, it usually means that the examination was either too hard or too easy. however, if the variance of scores is moderately large, then there is a definite difference in scores between "better," "average," and "poorer" students. a group of attorneys in a midwest state has been given the task of making up this year's bar examination for the state. the examination has 600 total possible points, and from the history of past examinations, it is known that a standard deviation of around 78 points is desirable. of course, too large or too small a standard deviation is not good. the attorneys want to test their examination to see how good it is. a preliminary version of the examination (with slight modification to protect the integrity of the real examination) is given to a random sample of 24 newly graduated law students. their scores give a sample standard deviation of 50 points. find a 99% confidence interval for the population standard deviation. a. 36.08 to 78.80 b. 57.49 to 125.57 c. 58.67 to 128.16 d. 56.28 to 122.93 e. 36.85 to 80.50
Answers: 3
Mathematics, 21.06.2019 14:00
Which product is positive a is 2/5 -8/9 -1/3 -2/7 b is -2/5 8/9 -1/3 -2/7 c is 2/5 8/9 1/3 -2/7 d is -2/5 -8/9 1/3 2/7
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Mathematics, 21.06.2019 20:00
You have 138.72 in your saving account u take out 45.23 and 18.00 you deposit 75.85 into your account
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Mathematics, 21.06.2019 20:00
What are the digits that repeat in the smallest sequence of repeating digits in the decimal equivalent of 24/11?
Answers: 1
Mathematics, 21.06.2019 20:10
Select the correct answer what is the most direct use of a compass in geometric constructions? a. to draw congruent angles b. to draw arcs of a given size c. to draw perpendicular lines d. to draw straight lines reset next next
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Afactor in determining the usefulness of an examination as a measure of demonstrated ability is the...
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