The mean score of a competency test is 82, with a standard deviation of 2. Between what two values do about 99.7% of the values lie? (Assume the data set has a bell-shaped distribution.)- A. Between 76 and 88- B. Between 80 and 84- C. Between 78 and 86- D. Between 74 and 90[Answer: Use the empirical rule for normal distributions, which states that approximately 99.7% of data within a normal distribution lies within three standard deviations of the mean. Calculate the range: Mean ± 3(Standard Deviations). Here, it is 82 ± 3(2) = 76 to 88, which corresponds to option A.]**Additional Options:**- View Instructor Tip- Calculator(**Note:** Illustration of options on screen to engage students in solving statistical probability questions.)

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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 mean score of a competency test is 82, with a standard deviation of 2. Between what two values do about 99.7% of the values lie? (Assume the data set has a bell-shaped distribution) O A. Between 76 and 88 O B. Between 80 and 84 O C. Between 78 and 86 O D. Between 74 and 90