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The average score on a standardized test is 500 points with a standard deviation of 50 points. What is the probability that a student scores between 450 and 600 on the standardized test?
asked by tom on July 21, 2011 
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The average score on a standardized test is 750 points with a standard deviation of 50 points. What is the probability that a student scores more than 700 on the standardized test?
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The average score on a standardized test is 750 points with a standard deviation of 50 points. If 2,000 students take the test at a local school, how many students do you expect to score between 700 and 800 points?
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The graduate selection committee wants to select the top 10% of applicants. On a standardized test with a mean of 500 and a standard deviation of 100, what would be the cutoff score for selecting the top 10% of applicants,
asked by mary on May 26, 2012 
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Six students took a national standardized test for which the average score was 700 and the standard deviation was 150. If a studentâ€™s zvalue is 1.75 on the test, what was the studentâ€™s score?
asked by Jamar on March 4, 2014 
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The human resources department of an engineering company gives IQ tests to a randomly selected group of new hires every year. They claimed that the mean IQ score of new hires, , from this year is greater than or equal to the mean
asked by Brittany on August 3, 2014 
statistics
2. Why is it important to know the mean and standard deviation for a data set when applying the empirical rule? 3. If we are focused on 68% of the normal distribution, what percentage of the distribution is left in the upper tail
asked by Cam on April 23, 2013 
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At a local high school students were randomly assigned to one of two math teachers Mrs smith and mrs jones. After the assignment, Mrs Smith had 30 students and mrs jones had 25 students. at the end of the year each class took the
asked by Anonymous on March 27, 2012 
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Suppose you have a mean standardized score of 1500 points with a standard deviation of 150 points. This data is normally distributed. What is the zscore of 1600 points? 0.75 0.5 0.67 0.32
asked by Destiny on May 31, 2015 
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the admissions policy at a certain university requires that incoming students score in the upper 20% on a standardized test. if the mean score on the test is 510 and the standard deviation of the scores is 80, what is the minimum
asked by Anonymous on December 15, 2011