The state test scores for12randomly selected high school seniors are shown on the right. Complete parts (a) through (c) below. Assume the population is normally distributed.14231222980 696721833 728742543 6251442940 (a) Find the sample mean. (b) Find the sample standard deviation. (c) Construct a 90% confidence interval for the population mean μ.

HERE GIVEN DATA FOR TEST SCORES HERE TOTAL SAMPLE SIZE=12=N (a) HERE ∑X=10895 SO SAMPLE MEAN…

Answered: (a) Find the sample mean. (b) Find…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Question

The state test scores for

randomly selected high school seniors are shown on the right. Complete parts (a) through (c) below.

Assume the population is normally distributed.

1423	1222	980
696	721	833
728	742	543
625	1442	940

(a) Find the sample mean.

(b) Find the sample standard deviation.

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.

Expert Solution