**Problem Description:**Do one of the following, as appropriate:(a) Find the critical value \( z_{\alpha/2} \).(b) Find the critical value \( t_{\alpha/2} \).(c) State that neither the normal nor the t distribution applies.**Given Information:**- Confidence level: 98%- Sample size: \( n = 26 \)- Population standard deviation (\( \sigma \)) is unknown.- Population appears to be normally distributed.**Instructions:**1. **Click to View References:** - Click here to view a table of critical t-values. - Click here to view page 1 of the standard normal table. - Click here to view page 2 of the standard normal table.2. **Options for Critical Value:** - A. \( t_{\alpha/2} = 2.167 \) - B. \( z_{\alpha/2} = 2.055 \) - C. \( t_{\alpha/2} = 2.485 \) - D. \( z_{\alpha/2} = 2.33 \) - E. Neither normal nor t distribution applies.**Solution Requirement:**Determine the correct critical value based on the given confidence level and sample size, using either a t-distribution or a normal distribution, or conclude that neither distribution is applicable.

The sample size is 26, confidence level is 98%, and the population standard deviation is unknown. The degrees of freedom is, df=n-1=26-1=25 The degrees of freedom is 25. The confidence level is 98%, than the level of significance is 0.02.Computation of critical value: The critical value of t-distribution for 0.02 level of significance at 25 degrees of freedom can be obtained using the excel formula “=T.INV.2T(0.02,25)”. The critical value is 2.485. Thus, the critical value tα2=2.485. Correct Answer: Option C. tα2=2.485.

Math

Statistics

Do one of the following, as appropriate. (a) Find the critical value za/2: (b) find the critical value t/2: (c) state that neither the normal nor the t distribution applies. Confidence level 98%; n=26; o is unknown; population appears to be normally distributed.

Do one of the following, as appropriate. (a) Find the critical value za/2: (b) find the critical value t/2: (c) state that neither the normal nor the t distribution applies. Confidence level 98%; n=26; o is unknown; population appears to be normally distributed.

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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