Majesty Video Production Inc. wants the mean length of its advertisements to be 26 seconds. Assume the distribution of ad length follows the normal distribution with a population standard deviation of 2 seconds. Suppose we select a sample of 14 ads produced by Majesty. What can we say about the shape of the distribution of the sample meanWhat is the standard error of the mean time?What percent of the sample means will be greater than 27.25 seconds?What percent of the sample means will be greater than 24.50 seconds?What percent of the sample means will be greater than 24.50 but less than 27.25 seconds?

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Answered: Majesty Video Production Inc. wants the…

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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Majesty Video Production Inc. wants the mean length of its advertisements to be 26 seconds. Assume the distribution of ad length follows the normal distribution with a population standard deviation of 2 seconds. Suppose we select a sample of 14 ads produced by Majesty.

What can we say about the shape of the distribution of the sample mean
What is the standard error of the mean time?
What percent of the sample means will be greater than 27.25 seconds?
What percent of the sample means will be greater than 24.50 seconds?
What percent of the sample means will be greater than 24.50 but less than 27.25 seconds?

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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