The scores of a large calculus class had an average of 70 out of 100, with a standard deviation of 15. Fill in the following blanks correctly. Round to the nearest integer.(a) The percentage of students that had a score over 90 was%.(b) The class was curved and students who placed in the lower 2% of all the scores failed the course. Fill in the following sentence about the cut-off score for F: studentsgetting the scoreor lower got an F.

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Answered: The scores of a large calculus class…

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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A mathematics professor lost a test paper belonging to one of her students. She remembered that the mean score for the class of 20 was 81 and that the sum of the 19 other scores was 1530. What was the grade on the paper she lost?
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Three hundred twenty students took a test where the scores are normally distributed. Paul's score was in the 80th percentile. How many students scored at or below Paul's score?
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Assume you had the following information regarding three different tests you took: The MATH test mean was 70; the standard deviation was 2; your score is 66. The VERBAL test mean was 60; the standard deviation was 3; your score is 57. The SCIENCE test mean was 80; the standard deviation was 3; your score is 83. On which of the 3 tests did you have your worst performance, relative to other students? A. Math B. Verbal C. Science
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Dianne has a choice of two routes to drive to work. She timed her journey along each route on several occasions and the times in minutes are given below:Town route: 15, 16, 20, 28, 21Country route: 19, 21, 20, 22, 18(i) Calculate the mean and standard deviation (to one d. p.) of each set of journey times.(ii) Which route would you recommend? Give a reason.
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