Teaching Assistants' Stipends A random sample of stipends of teaching assistants in economics is listed. Is there sufficient evidence at the =0.10 level to conclude that the average stipend differs from $15,500 ? The stipends listed (in dollars) are for the academic year. Assume that the population is approximately normally distributed. 18,00015,00012,28314,00012,00013,18511,98114,00014,356 Part 1 of 5 (a) State the hypotheses and identify the claim. H0:H1: This hypothesis test is a test. Part: 1/5 Part 2 of 5 (b) Find the critical value(s), Round the answer(s) to at least three decimal places. If there is more than one critical value, separate them with commas. Critical value(s):.