Question 13 (1 point) Question 13 Unsaved In the year 2000, the average car had

Question

Question 13 (1 point) Question 13 Unsaved In the year 2000, the average car had a fuel economy of 22.4 MPG. You are curious as to whether the average in the present day is less than than the historical value. The hypotheses for this scenario are as follows: Null Hypothesis: 22.4, Alternative Hypothesis: < 22.4. If the true average fuel economy today is 33.9 MPG and the null hypothesis is rejected, did a type I, type II, or no error occur? Question 13 options: 1) We do not know the p-value, so we cannot determine if an error has occured. 2) We do not know the degrees of freedom, so we cannot determine if an error has occured. 3) Type II Error has occured 4) Type I Error has occured. 5) No error has occured.

Explanation / Answer

When a null hypothesis is true and we reject it, we make type I error

Here, we rejected a true null hypothesis. Hence here ans is,

4) type I error has occured.

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