To test Upper H 0: muequals50 versus Upper H 1: muless than50, a random sample of size nequals22 is obtained from a population that is known to be normally distributed. Complete parts (a) through (d) below. LOADING... Click here to view the t-Distribution Area in Right Tail. Question content area bottom Part 1 (a) If x overbarequals47.3 and sequals12.3, compute the test statistic. t 0equals enter your response here (Round to three decimal places as needed.)