The graph illustrates the distribution of test scores taken by College Algebra students. The maximum possible score onthe test was 110, while the mean score was 72 and the standard deviation was 8.48566472808896Distribution of Test ScoresUse the "Empirical Rule", not a calculator or other technology. Do not round your answers.What is the approximate percentage students who scored between 64 and 80 on the test?What is the approximate percentage of students who scored between 64 and 72?What is the approximate percentage of students who scored less than 56 on the test?What is the approximate percentage of students who scored between 56 and 88 on the test?

Empirical Rule: The percentage of values lies between one standard deviation from the mean is…

Answered: The graph illustrates the distribution…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The GMAC Insurance company reported that the mean score on the National Drivers Test was 77.8 with a standard deviation of 2.5 points. The test scores are approximately bell-shaped. Approximately 68% of all test scores were between two values A and B. What is the value of A? Write only a number as your answer. Round to one decimal place.
The graph illustrates the distribution of test scores. The mean score was 73 and the standard deviation was 9. 46 55 64 73 82 91 100 Distribution of Test Scores Use the "Empirical Rule", not a calculator or other technology. a. What is the approximate percentage students who scored between 64 and 82 on the test? b. What Is the approximate percentage of students who scored between 55 and 91 on the test? 96 C. What is the approximate percentage of students who scored less than 55 on the test? d. What is the approximate percentage of students who scored between 73 and 82 on the test?
The college physical education department offered an advanced first aid course last summer. The scores on the comprehensive final exam were normally distributed, and the z-scores for some of the students are shown below. If the mean score was ? = 152 with standard deviation ? = 21, what was the final exam score for each student? (Round your answers to the nearest whole number.) Robert _______ Juan __________ Haley ________ Joel ________ Jan ________ Linda _________
Someone tells you that the mean score on a test was 85, and the standard deviation was -10. What does this mean? A. Need more information to answer this question B. The most common score was 75. C. A majority of the class scored less than 85. D. This is not possible. Standard deviation cannot be negative.
An Excel assignment counts for 0-10 points. The scores in a class of 12 students are recorded as follows:1 5 5 6 7 7 8 8 8 9 10 10 What is the deviation of the score 10 from the mean in 13a (recall that this involves a subtraction of the mean from the particular score)? I think I got answer but want to check.
The mean height of Americans in 1776 was 67 inches with a standard deviation of 3 inches. George Washington is believed to have been 6 ft 2 inches tall, or 74 inches. Between what two heights (in inches) do 68% of the heights fall? a.61 to 70 b.61 to 73 c.64 to 70
Mario's weekly poker winnings have a mean of $353 and a standard deviation of $67. Last week he won $185. How many standard deviations from the mean is that?
Tom scored a 115 on a measure of math ability and a 40 on a measure of verbal ability. The means and standard deviations on the measure of math ability and verbal ability are M = 95, s = 15 and M = 35, s = 2.95, respectively. In which area did Tom do better?
A successful basketball player has a height of 6 feet 11 inches, or 211 cm. Based on statistics from a data set, his height converts to the z score of 5.17. How many standard deviations is his height above the mean?
In a certain population, the mean score on a test is 420. The standard deviation is 105. If the distribution or scores is normal, which of these scores should occur most often. a. 385 b314 c. 540 d. 526

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