The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts (a) through (c) below. Assume the population is normally distributed.14281228980 698725831 723742550 6241446946 (a) Find the sample mean. x=enter your response here(Round to one decimal place as needed.)

Given values 1428, 1228, 980, 698, 725, 831, 723, 742, 550, 624, 1446, 946 N=12

Answered: Find the sample mean. x=enter your…

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 state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts (a) through (c) below.

Assume the population is normally distributed.

1428	1228	980
698	725	831
723	742	550
624	1446	946

(a) Find the sample mean.

x=enter your response here

(Round to one decimal place as needed.)

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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