Find the critical value corresponding to a 99% confidence level, given that the sample has size. 2 n = 21 1.428 1.28 2.831 A 2 845

MATLAB: An Introduction with Applications
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**Question 1**

Find the critical value \( t_{\frac{\alpha}{2}} \) corresponding to a 99% confidence level, given that the sample has size \( n = 21 \).

Options:
- \( 1.428 \)
- \( 1.28 \)
- \( 2.831 \)
- \( 2.845 \)

---

This question requires choosing the appropriate critical value for a t-distribution. To find this, one usually refers to a t-table or uses statistical software, considering the degrees of freedom (sample size minus one) and the confidence level specified.
Transcribed Image Text:**Question 1** Find the critical value \( t_{\frac{\alpha}{2}} \) corresponding to a 99% confidence level, given that the sample has size \( n = 21 \). Options: - \( 1.428 \) - \( 1.28 \) - \( 2.831 \) - \( 2.845 \) --- This question requires choosing the appropriate critical value for a t-distribution. To find this, one usually refers to a t-table or uses statistical software, considering the degrees of freedom (sample size minus one) and the confidence level specified.
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