A petroleum refiner selling automobile fuel in California, wanting to test whether their ethanol level is within the prescribed limits, has taken a systematic random sample, and has calculated the upper and lower limits of the confidence interval estimate of the percent ethanol as 21 to 24 percent. If the ethanol level, as required by the state of California must not be less than 26 percent, which of the following conclusions should be made?
1. Fail to reject the null hypothesis and conclude the ethanol level is within compliance
2. Reject the null hypothesis and conclude the ethanol level is too low
3. Fail to reject the null hypothesis and conclude the ethanol level is too low
4. Reject the null hypothesis and conclude the ethanol level is too high
5. Fail to reject the null hypothesis and conclude the ethanol level is too high
6. Reject the null hypothesis and conclude the ethanol level is within compliance
7. none of these