### Internet Viewing Survey#### Research ObjectiveA researcher is aiming to estimate the average time (in minutes) a person spends daily on the internet. The goal is to achieve a high degree of confidence in the estimate provided by the sample mean.#### Key Requirements1. **Confidence Level**: The researcher wants to be 99% confident in the estimate.2. **Margin of Error**: The population mean should be within 11 minutes of the sample mean.3. **Population Standard Deviation**: It is given that the standard deviation is 36 minutes.#### Sample Size CalculationTo achieve the desired confidence level and margin of error, the researcher needs to determine the appropriate sample size.#### ResultThe researcher needs a sample of at least **\[ \text{in the box} \]** people to meet the criteria.#### Graphs and DiagramsThere is a text box asking for the sample size. The equation or formula used to derive the sample size is not presented in the image, but typically, sample size calculations in this context use the following formula:\[ n = \left( \frac{Z \times \sigma}{E} \right)^2 \]where:- \( n \) is the sample size- \( Z \) is the Z-score corresponding to the desired confidence level (for 99%, \( Z \approx 2.576 \))- \( \sigma \) is the population standard deviation (36 minutes in this case)- \( E \) is the desired margin of error (11 minutes)Please ensure all calculations and justifications consider the specified assumptions and requirements.

Obtain the sample size. The sample size is obtained below as follows: The formula of sample…

Internet Viewing A researcher wishes to estimate the average number of minutes per day a person spends on the Internet. How large a sample must she select if she wishes to be 99% confident that the population mean is within 11 minutes of the sample mean? Assume the population standard deviation is 36 minutes. Round your final answer up to the next whole number. The researcher needs a sample of at least people.

Internet Viewing A researcher wishes to estimate the average number of minutes per day a person spends on the Internet. How large a sample must she select if she wishes to be 99% confident that the population mean is within 11 minutes of the sample mean? Assume the population standard deviation is 36 minutes. Round your final answer up to the next whole number. The researcher needs a sample of at least people.

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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You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estimation for the population proportion. You would like to be 80% confident that you estimate is within 3.5% of the true population proportion. How large of a sample size is required? n = Question Help: Message instructor Submit Question
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Use the expression in the accompanying discussion of sample size to find the size of each sample if you want to estimate the difference between proportions of men and women who own smartphones. Assume that you want 95% confidence that your error is no more than 0.03.
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Which parameters would give you the best estimate of a population proportion, where n represents sample size and represents the sample proportion? A B n = 100, p = 0.40 D n = 110, p=0.38 c n=150, p=0.34 n = 120, p=0.58