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Name: 5.Stocks and Mutual Fund Ownership It has been found that 51.4% of U.
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Description: 5.Stocks and Mutual Fund Ownership It has been found that 51.4% of U.S. households own stocks and mutual funds. A random sample of 300 heads of households indicated that 178 owned some type of stock. At what level of significance would you conclude

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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5.Stocks and Mutual Fund Ownership It has been found that

51.4% of U.S. households own stocks and mutual funds. A random sample of

300 heads of households indicated that 178 owned some type of stock. At what level of significance would you conclude that this was a significant difference? Use the

P-value method. Assume the variable normally distributed. Use a graphing calculator.

Find the P-value.

At what level of significance is this a significant difference?

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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