A new gasoline additive is supposed to make gas burn more cleanly and increase gas mileage in the process. Consumer Protection Anonymous conducted a mileage test to confirm this. They took a sample of their cars, filled it with regular gas, and drove it on I-94 until it was empty. They repeated the process using the same cars, but using the gas additive. Using the data they found, they performed a paired t-test with data calculated as (with additive - without additive) with the following hypotheses: Null Hypothesis: _D 0, Alternative Hypothesis: _D> 0. If they calculate a p-value of 0.7755 in the paired samples t-test, what is the appropriate conclusion?

Question 11 options:

1)

We did not find enough evidence to say the average difference in gas mileage was not 0. The additive does not appear to have been effective.

2)

We did not find enough evidence to say there was a significantly positive average difference in gas mileage. The additive does not appear to be effective.

3)

The average difference in gas mileage is less than or equal to 0.

4)

The average difference in gas mileage is significantly larger than 0. The average gas mileage was higher with the additive.

5)

We did not find enough evidence to say there was a significantly negative average difference in gas mileage. The additive does not appear be effective.