Question

Asked Jun 30, 2019

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Find the critical value tc for the confidence level c=0.98 and sample size n=21

Step 1

** **

*The critical value tc for 98% confidence level with sample size 21:*

The confidence level is 98%. That is, the level of significance is 1–0.98 = 0.02. Therefore, α=0.02 and α / 2=0.01. Here, sample size is 21(*n*).

Therefore,

Step 2

From the *t*-table:

- Locate the value 20 in the column of degrees of freedom.
- Locate 0.02 in level of significance of two tailed.
- The interse...

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