Imagine we have collected a random sample of 31 energy bars from a number of different stores. The labels on the bars claim that each bar contains 20 grams of protein. However our analysis found that the sample mean was 21.4g with a sample standard deviation of 2.54g. Is it possible that the population mean could be a value other than 20 grams of protein? Test this hypothesis at the 0.05 significance level. 22. Is this a two-tailed test or a one-tailed test? Why? Answer: 23. State the Null Hypothesis Answer: 24. State the Alternative Hypothesis Answer: 25. State the critical value(s) (make sure you are reading from the correct row-column combo on the T table) 26. Calculate the t-test statistic or value (show your workings) Answer: 27. Based on your answers to questions 25 & 26 are you rejecting or accepting the Null Hypothesis? Answer: 28. What is the meaning of this in terms of the proplem posed? Answer: