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An aptitude test is designed to measure leadership abilities
An aptitude test is designed to measure leadership abilities of the test subjects. Suppose that the scores on the test are normally distributed with a mean of 570 and a standard deviation of 120. The … read more
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Master's Degree
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An aptitude test is designed to measure leadership abilities
An aptitude test is designed to measure leadership abilities of the test subjects. Suppose that the scores on the test are normally distributed with a mean of 570 and a standard deviation of 125. The … read more
R.R. Jha
Bachelor's Degree
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3. The scores on a national high school aptitude test are
3. The scores on a national high school aptitude test are normally distributed with a mean of 500 and a standard deviation of 80. a. What portion of the scores exceed 600? (i.e. What is the probabilit… read more
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A math teacher gives two different tests to measure
A math teacher gives two different tests to measure students' aptitude for math. Scores on the first test are normally distributed with a mean of 24 and a standard deviation of 4.5. Scores on the seco… read more
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Can you think of examples of the CLT at work -- that is, non-Normal
Can you think of examples of the CLT at work -- that is, non-Normal variables whose average, with sufficiently large sample, tends to Normal?… read more
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Statistical Techniques in Business & Economics Ch. 8, pp.
Statistical Techniques in Business & Economics: Ch. 8, pp. 286-88 exercise 21, 22, 34. Ch. 9, pp. 319-20 exercise 32, 34, 46. Business Research Methods Ch. 3, pp 80 exercise 5 Statistical Techniques i… read more
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For M Hasan 1. Find the following probabilities (A)
'For M Hasan' 1. Find the following probabilities: (A) Events A and B are mutually exclusive events defined on a common sample space. If P (A) = 0.2 and P(A or B) = 0.60, find P(B). (B) Events A and B… read more
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I need help with this problem ASAP. Please let me know if you
I need help with this problem ASAP. Please let me know if you could help me. An aptitude test has a mean of 136 and standard deviation of 3. Find the corresponding z scores for: - a test score of 163 … read more
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(1.) Starting with the data values 70 and 100, add three data
(1.) Starting with the data values 70 and 100, add three data values to the sample so that the mean is 87, the median is 88, and the mode is 88. (2.) A class of 15 kindergarteners had the following we… read more
StatisticsExpert
Asst. Professor
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c1)Michael and anna each choose at random an integer between
c1)Michael and anna each choose at random an integer between 1 and 15, inclusive. Choose the option that gives the probability that the integers choosen add up to 6. A)1/50 B)1/45 C)1/25 D)3/50 E)2/25… read more
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Ms. Parez gave an exam to her students during the first week
Ms. Parez gave an exam to her students during the first week of class. Since students performed poorly, she added 20 points to everyone's score so that nobody would feel too discouraged. In changing t… read more
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5. An aptitude test has a mean of 220 and standard
5. An aptitude test has a mean of 220 and standard deviation of 10. find the corresponding z score for: a) a test score of 232 b) a test score of 212… read more
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1. When a distribution is bell-shaped, approximately what ...
1. When a distribution is bell-shaped, approximately what percentage of data values will fall within one standard deviation of the mean? A. 50% B 95% C. 68% D. 99.7% 2. What is the relationship betwee… read more
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tutor
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1. The mean, median, and mode are the most common measures
1. The mean, median, and mode are the most common measures of dispersion (spread). _____(T/F) 2. Each set of data has four quartiles; they divide the ranked data into four equal quarters. _____ (T/F) … read more
the prof
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1. for which of the following situations is it appropriate ...
1. for which of the following situations is it appropriate to use a scatter diagram or scatter plot? a) presenting two qualitative variables b) presenting one qualitative and one quantitative variable… read more
abozer
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14 b) Use the Empirical Rule to find what 2 values 95% of ...
14 b) Use the Empirical Rule to find what 2 values 95% of the data will fall between for a data set with mean 234 and standard deviation of 12. 15. Find P25(the 25 is smaller than the P) for the follo… read more
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I need a long answer to this question, preferably 1-2 pages
I need a long answer to this question, preferably 1-2 pages in length. Describe the nature or purpose of intelligence, aptitude and special aptitude tests.… read more
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8. The mean of a normal probability distribution is 60; the ...
8. The mean of a normal probability distribution is 60; the standard deviation is 5. a. About what percent of the observations lie between 55 and 65? b. About what percent of the observations lie betw… read more
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