Assuming that the Entrance Test scores of Grade 6 students are normally distributed with a mean of 120 and a standard deviation of 10. What is the raw score (x) of Jenny if her z-score is 3? interpret the computed value of the raw score (x).

Assuming that the Entrance Test scores of Grade 6 students are normally distributed with a mean of 120 and a standard deviation of 10. What is the raw score (x) of Jenny if her z-score is 3? interpret the computed value of the raw score (x).

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 12PPS

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Question

1. Assuming that the Entrance Test scores of Grade 6 students are normally distributed with a mean of 120 and a standard deviation of 10. What is the raw score (x) of Jenny if her z-score is 3? interpret the computed value of the raw score (x).

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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