Area Under a Normal Distribution Bin...THE SCORES OF A SCIENCE TESTHAD AN AVERAGE OF 78 AND ASTANDARD DEVIATION OF 3. WHATPERCENT OF STUDENTS SCOREDABOVE AN 82?THE SCORES ON A SCIENCETEST HAD AN AVERAGE OF 78AND A STANDARD DEVIATIONOF 3. WHAT PERCENT OFSTUDENTS SCORED BETWEEN A69 AND 79?THE SCORES ON THE SAT MATHHAD A MEAN OF 431 AND ASTANDARD DEVIATION OF 117.HOW HIGH OF A SCORE DO YOUNEED TO BE IN THE TOP 10% OFALL SCORES?

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A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Solve each word problem. Show the conversion of raw score to z-score. Illustrate the appropriate shading of the normal curve for each problem. Box your final answer. A professor reported that the mean score in a recent quiz is 72 and the standard deviation is 6. What is the proportion of students who obtained scores between 50 and 75?
Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Click to view page 1 of the table. LOADING... Click to view page 2 of the table. LOADING... 85 110 A graph with a bell-shaped curve, divided into 3 regions by 2 lines from top to bottom, one on the left side and one on the right side. The region between the lines is shaded. Moving from left to right, the x-axis below the first line is labeled 85. The x-axis below the second line is labeled 110. Question content area bottom Part 1 The area of the shaded region is enter your response here. (Round to four decimal places as needed.)
Look for a,b,c and d. Thanks
Let’s assume that weight is normally distributed with a mean of 160 and a standard deviation of 25 pounds. The middle 80% 0f all people lie between which two weights?
Scores of on a math test were normally distributed with a mean of 82 and a standard deviation of 6. What percentage of the scores that is more than 90? Show your works and read the table.
You are told that a set of data includes one score which is 0.8.The standard deviation for the set is 0. Can you give the mean of the set and say anything else about the six other scores in the set?
Beth scored 88 on a nutrition test. The class mean was 81 and the standard deviation was 3.2. What is Beth's T-score? Group of answer choices 47.8 71.9 22.4 Beth's T-score cannot be calculated. Not enough information is provided.
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.
The state and will spend 15 hours average a week and class and the standard deviation is 2 hours what percentage of students spend less than 12 hours in class
You scored a 85 on a stats test with a mean of 70 and a standard deviation of 7. Youalso score a 90 on a Bio test with a mean of 80 and a standard deviation of 8. Inwhich test did you score better, relative to the other test takers? What measure areyou using to answer this question?

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