Respuesta :

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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