. Fear of the dark is quite common among children. However, what about adults? One polling agency released the results of a survey that asked people over 50 years old if they keep the lights on at night. Among 766 respondents, 37% indeed leave the light on when going to sleep. Part 1 of 2 Calculate the margin of error for this survey. Round the percentage to one decimal place. Do not round intermediate steps. If 37% of 766 respondents keep the lights on at night, the margin of error is 3.4 %. Correct Answer: If 37% of 766 respondents keep the lights on at night, the margin of error is 3.5%. Part: 1/2 Part 2 of 2 What does this margin of error tell you about the percentage of adults who keep the lights on at night? % and % of adults keep the lights on at night. We can be 95% confident that somewhere between

. Fear of the dark is quite common among children. However, what about adults? One polling agency released the results of a survey that asked people over 50 years old if they keep the lights on at night. Among 766 respondents, 37% indeed leave the light on when going to sleep. Part 1 of 2 Calculate the margin of error for this survey. Round the percentage to one decimal place. Do not round intermediate steps. If 37% of 766 respondents keep the lights on at night, the margin of error is 3.4 %. Correct Answer: If 37% of 766 respondents keep the lights on at night, the margin of error is 3.5%. Part: 1/2 Part 2 of 2 What does this margin of error tell you about the percentage of adults who keep the lights on at night? % and % of adults keep the lights on at night. We can be 95% confident that somewhere between

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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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

. Fear of the dark is quite common among children. However, what about adults? One polling agency released the results of a survey that asked people over 50
years old if they keep the lights on at night. Among 766 respondents, 37% indeed leave the light on when going to sleep.
Part 1 of 2
Calculate the margin of error for this survey. Round the percentage to one decimal place. Do not round intermediate steps.
If 37% of 766 respondents keep the lights on at night, the margin of error is 3.4 %.
Correct Answer:
If 37% of 766 respondents keep the lights on at night, the margin of error is 3.5%.
Part: 1/2
Part 2 of 2
What does this margin of error tell you about the percentage of adults who keep the lights on at night?
% and
% of adults keep the lights on at night.
We can be 95% confident that somewhere between

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In politics, marketing, etc. we often want to estimate a percentage or proportion p. One calculation in statistical polling is the margin of error - the largest (reasonble) error that the poll could have. For example, a poll result of 72% with a margin of error of 4% indicates that p is most likely to be between 68% and 76% (72% minus 4% to 72% plus 4%). In a (made-up) poll, the proportion of people who like dark chocolate more than milk chocolate was 44% with a margin of error of 2.2%. Describe the conclusion about p using an absolute value inequality. The answer field below uses the symbolic entry option in Mobius. That lets you type in a vertical bar | to represent absolute values. Also, when you type in and then =, the symbolic entry option will automatically convert that to >.
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Find an article of your choice which uses proportions, and copy and paste the address of that article in this step. Identify at least one sample proportion within the article (you can list more than one if you like), and state what that sample proportion measures. For example, if you're told that the sample proportion of people in Renton who are taller than 5'11" is 80.7%, and you're also told that the sample size is 57, then you would state the proportion as 46/57 in your response for this part of the assignment. You will probably have to interpret what is being said in the article in order to be able to state specifically what the sample proportion represents. Also, you might not have x or n, you might only have the percentage or a decimal equivalent. Often, the size of the sample is stated somewhere in the article, and it's important to find that value. So, if n is given, please include it in this part of the assignment. If stated in the article, identify whether the sample is a…
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In politics, marketing, etc. we often want to estimate a percentage or proportion p. One calculation in statistical polling is the margin or error- the largest (reasonable) error that the poll could have. For example, a poll result of 72% with a margin of error of 4% indicates that p is most likely to be between 68% and 76% (72% minus 4% to 72% plus 4%). In a made up poll, the proportion of people who like dark chocolate more than milk chocolate was 44% with a margin of error of 1.3%. Describe the conclusion about p using an absolute value inequality.
n politics, marketing, etc. we often want to estimate a percentage or proportion p. One calculation in statistical polling is the margin of error - the largest (reasonble) error that the poll could have. For example, a poll result of 72% with a margin of error of 4% indicates that p is most likely to be between 68% and 76% (72% minus 4% to 72% plus 4%). In a (made-up) poll, the proportion of people who like dark chocolate more than milk chocolate was 34% with a margin of error of 1.3%. Describe the conclusion about p using an absolute value inequality.