Scores on in biology tests are normally distributed with the mean of 78 in a standard deviation of 8.2 find the score that represents the 61st percentile Scores on an Biology test are normally distributed with a mean of 78 and a standard deviation of 8.2. Find thescore that represents the 61st percentile.A) 86.2B) 80.3C) 75.7D) 83.1

Let random variable X denote the scores on a biology test.and X is normally distributed with,mean…

Answered: Scores on an Biology test are normally…

Scores on an Biology test are normally distributed with a mean of 78 and a standard deviation of 8.2. Find the score that represents the 61st percentile. A) 86.2 B) 80.3 C) 75.7 D) 83.1

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 18HP

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Question

Scores on in biology tests are normally distributed with the mean of 78 in a standard deviation of 8.2 find the score that represents the 61st percentile

Scores on an Biology test are normally distributed with a mean of 78 and a standard deviation of 8.2. Find the
score that represents the 61st percentile.
A) 86.2
B) 80.3
C) 75.7
D) 83.1

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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