#3 help with understanding

3. An article posted online recently suggested that quarters weigh less now than they did prior to 1964. At 0: = 0.005 test the claim that pre-1964 quarters have a mean weight that is greater than the mean weight of post-1964 quarters. Below is sample data for quarter weights prior to 1964 and after 1964 (9 points): Post - 1964 f a. State the hypotheses and identify the claim. b. Find the critical value(s) from the appropriate table. c. Compute the test value. d. Make the decision to reject or not reject the null hypothesis. Justify. e. Summarize the results