**Question: Improve Understanding of Confidence Intervals and Margin of Error**A sample of $ n = 25 $ diners at a local restaurant had a mean lunch bill of $16 with a standard deviation of $ \sigma = \$4 $. We obtain a 95% confidence interval as (14.43, 17.57). Which action will not reduce the margin of error?- ○ Sampling from a population with less variability- ○ Decreasing the sample size- ○ Decreasing the confidence level- ○ Increasing the number of digits for calculating the interval**Explanation for Options:**1. **Sampling from a population with less variability:** This typically reduces the margin of error since less variability means more reliable estimates.2. **Decreasing the sample size:** Generally, this increases the margin of error because smaller samples tend to provide less precise estimates, so this is the correct answer.3. **Decreasing the confidence level:** This usually reduces the margin of error as a lower confidence level means a narrower interval.4. **Increasing the number of digits for calculating the interval:** This doesn't affect the actual statistical margin of error; it merely changes the precision of how the results are reported.**Tip:** When assessing actions in statistical analysis, consider how each factor influences the overall precision and reliability of your estimates.

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Description: **Question: Improve Understanding of Confidence Intervals and Margin of Error**A sample of $ n = 25 $ diners at a local restaurant had a mean lunch bill of $16 with a standard deviation of $ \sigma = \$4 $. We obtain a 95% confidence interval as

Sample size , n = 25 Mean = 16 Standard deviation = 4 95% confidence interval as (14.43, 17.57).

Math

Statistics

A sample of n = 25 diners at a local restaurant had a mean lunch bill of $16 with a standard deviation of o = $4. We obtain a 95% confidence interval as (14.43, 17.57). Which action will not reduce the margin of error? O sampling from a population with less variability O decreasing the sample size decreasing the confidence level increasing the number of digits for calculating the interval

A sample of n = 25 diners at a local restaurant had a mean lunch bill of $16 with a standard deviation of o = $4. We obtain a 95% confidence interval as (14.43, 17.57). Which action will not reduce the margin of error? O sampling from a population with less variability O decreasing the sample size decreasing the confidence level increasing the number of digits for calculating the interval

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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