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1. The scores in final of the engineering students in their EDA class are normally distributed with a mean of 75 and a standard deviation of 6. Using the empirical rule "68-95-99.7". Find the percentage of the class that: a. Score is above 87. b. Score is below 69. c. Score is below 81 but above 63.

1. The scores in final of the engineering students in their EDA class are normally distributed with a mean of 75 and a standard deviation of 6. Using the empirical rule "68-95-99.7". Find the percentage of the class that: a. Score is above 87. b. Score is below 69. c. Score is below 81 but above 63.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 22PFA
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Show your solutions and draw the curves for the word problems. II. Word Problems. 1. The scores in final of the engineering students in their EDA class are normally distributed with a mean of 75 and a standard deviation of 6. Using the empirical rule “68-95-99.7". Find the percentage of the class that: a. Score is above 87. b. Score is below 69. c. Score is below 81 but above 63. 2. The average test scores of students in NSTP class were 70 with a standard deviation of 8. There are 500 students in this class. Use the positive and negative z-score table to answer the following questions. a. What is the probability of randomly selecting students with a score of less than 65? b. How many students scored above 85? c. The middle 50% of test scores fall between what two points?
Transcribed Image Text:Show your solutions and draw the curves for the word problems. II. Word Problems. 1. The scores in final of the engineering students in their EDA class are normally distributed with a mean of 75 and a standard deviation of 6. Using the empirical rule “68-95-99.7". Find the percentage of the class that: a. Score is above 87. b. Score is below 69. c. Score is below 81 but above 63. 2. The average test scores of students in NSTP class were 70 with a standard deviation of 8. There are 500 students in this class. Use the positive and negative z-score table to answer the following questions. a. What is the probability of randomly selecting students with a score of less than 65? b. How many students scored above 85? c. The middle 50% of test scores fall between what two points?
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