Answered: If n=310 and ˆpp^ (p-hat) =0.34, 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

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If n=310 and ˆpp^ (p-hat) =0.34, find the margin of error at a 95% confidence level

Give your answer to three decimals

In a recent poll, 240 people were asked if they liked dogs, and 25% said they did. Find the margin of error of this poll, at the 90% confidence level.

Give your answer to three decimals

A population of values has a normal distribution with μ=220.7 and σ=8.6. You intend to draw a random sample of size n=207

What is the mean of the distribution of sample means?
μ¯x=

What is the standard deviation of the distribution of sample means?
σ¯x= Round to 4 decimal places.

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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