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Sagot :
Using a t-distribution calculator, it is found that the critical value for the hypothesis test is of t = 1.3277.
How to find the critical value of the t-distribution?
The critical value is found considering three inputs:
- The tail.
- The significance level.
- The amount of degrees of freedom, which is one less than the sample size.
Hence, for a two-tailed test, with a 0.2 significance level and 19 df, the critical value is of t = 1.3277.
More can be learned about the t-distribution at https://brainly.com/question/16162795
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