As a researcher, you are curious if energy bars impact people's energy. To assess this question, you will calculate a confidence interval for the following data. The average energy on a scale of 1-200 in the general population is (mu) = 130, with (sigma) = 4.5. You recruit 25 people who eat energy bars and assess their energy. This sample has an average of xbar = 140. show steps please. State the null and alternative hypotheses. Find the corresponding critical z-value(s) for Type I error rate (alpha) of = 0.05. Remember, confidence intervals are almost always non-directional. What level of confidence do you have? Please calculate the confidence interval for these data. Would you retain or reject the null hypothesis? Explain your answer based on the confidence interval. In everyday language, what do these results tell you about the research