Researchers examined the bill color (in hue degree) of male and female zebra finches. Here are the summary statistics from the study. We are interested in testing the following hypotheses: 0 : = 1 : Based on the 95% confidence interval - 5 . 24 - - 3 . 78 which one of the following conclusions is correct? Answer 1. can reject the null hypothesis at significance level alpha 5%. 2. fail to reject the null hypothesis at significance level alpha 5%. 3. can reject the alternative hypothesis at significance level alpha 5%. 4. fail to reject the alternative hypothesis at significance level alpha 5%