### Understanding Confidence IntervalsConfidence intervals are a range of values, derived from a dataset, that are used to estimate the true value of a population parameter. They give an estimated range believed to contain the parameter with a specified level of confidence, usually 90%, 95%, or 99%. Here, we are tasked with determining the confidence levels for given confidence intervals.Please review the following detailed equations and their associated confidence levels:**a.** $ \bar{x} \pm 1.645 \left( \frac{\sigma}{\sqrt{n}} \right) $- 90% (Round to two decimal places as needed.)**b.** $ \bar{x} \pm 2.575 \left( \frac{\sigma}{\sqrt{n}} \right) $- 99% (Round to two decimal places as needed.)**c.** $ \bar{x} \pm 1.282 \left( \frac{\sigma}{\sqrt{n}} \right) $- 80% (Round to two decimal places as needed.)**d.** $ \bar{x} \pm 0.99 \left( \frac{\sigma}{\sqrt{n}} \right) $- __.__ % (Round to two decimal places as needed.)To solve part **d**:We must determine the confidence level corresponding to the critical value $ Z = 0.99 $.### Explanation of Symbols:- $ \bar{x} $: Sample mean- $ \sigma $: Population standard deviation- $ n $: Sample size- $ \sqrt{n} $: Square root of the sample size### Using the Table of Normal Curve Areas:Refer to a Z-table or standard normal distribution table to determine the exact confidence levels:- 1.645 corresponds to approximately 90%.- 2.575 corresponds to approximately 99%.- 1.282 corresponds to approximately 80%.- 0.99, using the Z-table, corresponds to approximately __.__%.### Interactive Tool:Click the icon to view the table of normal curve areas. Use this to match the Z-values to their corresponding percentage areas under the curve, thus helping to understand the confidence levels.By using these Z-values, you will be able to construct confidence intervals for various levels of confidence, subsequently ensuring the accuracy of population parameter estimations from sample data. Note:

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"hat is the confidence level of each of the following confidence intervals for u? Complete parts a throughe. Click the icon to view the table of normal curve areas. -x+1.645 90 % (Round to two decimal places as needed.) -x+2.575 99 % (Round to two decimal places as needed.) 1. x±1.282 80 % (Round to two decimal places as needed.) e. x+0.99 % (Round to two decimal places as needed.)

"hat is the confidence level of each of the following confidence intervals for u? Complete parts a throughe. Click the icon to view the table of normal curve areas. -x+1.645 90 % (Round to two decimal places as needed.) -x+2.575 99 % (Round to two decimal places as needed.) 1. x±1.282 80 % (Round to two decimal places as needed.) e. x+0.99 % (Round to two decimal places as needed.)

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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I think the answer to this last part is C
Pls help ASAP. Pls show all work. Pls do both of the asked questions pls i BEG.
Please answer within 30min thanks. n = 29 for the 90% confidence interval for the mean.
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