Answered: a person is trying to figure out what…

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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a person is trying to figure out what percent of adult americans dread valentine's day. the person does a survey of 1000 a dult american , 18% dreaded valentine's day. obtain a 90% confidence interval for the proportion of american who dread valentine's day. check the condition for the CLT to see if we ca say the data is approximately normally distributed, find the critical value for a 90% confidence level, what is the standar error for the proportion of a dult americans that dread valentie's day?

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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