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Find the mean of the data summarized in the given frequency Speed (miles per hour) Frequency 42-45 26 The mean of the frequency distribution is miles per hour. (Round to the nearest tenth as needed.) 46-49 12 50-53 6 54-57 4 58-61 2 C

Find the mean of the data summarized in the given frequency Speed (miles per hour) Frequency 42-45 26 The mean of the frequency distribution is miles per hour. (Round to the nearest tenth as needed.) 46-49 12 50-53 6 54-57 4 58-61 2 C

MATLAB: An Introduction with Applications
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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Find the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of 51.1 miles per hour. Speed (miles per hour) Frequency The mean of the frequency distribution is miles per hour. (Round to the nearest tenth as needed.). 42-45 26 46-49 12 50-53 6 54-57 4 58-61 2
Transcribed Image Text:Find the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of 51.1 miles per hour. Speed (miles per hour) Frequency The mean of the frequency distribution is miles per hour. (Round to the nearest tenth as needed.). 42-45 26 46-49 12 50-53 6 54-57 4 58-61 2
A student's course grade is based on one midterm that counts as 5% of his final grade, one class project that counts as 20% of his final grade, a set of homework assignments that counts as 30% of his final grade, and a final exam that counts as 45% of his final grade. His midterm score is 79, his project score is 99, his homework score is 85, and his final exam score is 66. What is his overall final score? What letter grade did he earn (A, B, C, D, or F)? Assume that a mean of 90 or above is an A, a mean of at least 80 but less than 90 is a B, and so on. His overall final score is (Type an integer or a decimal. Do not round.)
Transcribed Image Text:A student's course grade is based on one midterm that counts as 5% of his final grade, one class project that counts as 20% of his final grade, a set of homework assignments that counts as 30% of his final grade, and a final exam that counts as 45% of his final grade. His midterm score is 79, his project score is 99, his homework score is 85, and his final exam score is 66. What is his overall final score? What letter grade did he earn (A, B, C, D, or F)? Assume that a mean of 90 or above is an A, a mean of at least 80 but less than 90 is a B, and so on. His overall final score is (Type an integer or a decimal. Do not round.)
Expert Solution
Step 1

given data 

speed frequency(f) midpoint(x) f*x
42-45 26 43.5 1131
46-49 12 47.5 570
50-53 6 51.5 309
54-57 4 55.5 222
58-61 2 59.5 119
  n = 50   ∑fx = 2351
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