I need help with question 65-69 please?

The following 2 questions (055 to Q56) are based on the following information: The CPI's at the start of each decade from 1940 to 1990 were: Year 1940 1950 1960 1970 1980 1990 CPI 14.0 24.1 29.6 38.8 82.4 130.7 the CPI? Q55: What was the rate of inflation for the 1950's, as measured by the percentage change in ( 29. 4 - 24. 1) / 24.1 . 100 = 22.820 the CPI? Q56: What was the rate of inflation for the 1970's, as measured by the percentage change in 82 . 4 - 38.8 / 38.8 . 100 = 112. 37 90 Q57: Name the major category added for the market basket of goods and services in 1998? Education and Q58: Tuition at University Z was $1000 per quarter in 1985 (CPI = 107.6). How much should tuition be in 2001 adjusted for inflation (CPI = 175.1)? 1000 . ( 175 . 1 / 107 . 6 ) = $ 1627.32 The following 2 questions (059 to (60) are either "True" or "False" Q59: The current "base period" that we are on is 1982-1984. True Q60: 'Child care' is one of the eight major categories of goods and services in the market basket. False The following 13 questions (Q61 to (73) are based on the following example: Patients recovering from an appendix operation normally spend an average of 6.3 days in the hospital. The distribution of recovery times is normal with a o = 2.2 days. The hospital is trying a new recovery program designed to lessen the time patients spend in the hospital. The first 25 appendix patients in this new program were released from the hospital in an average of 5.5 days. On the basis of these data, can the hospital conclude that the new program has a significant reduction of recovery time. Test at the .01 level of significance. Q61: The appropriate statistical procedure for this example would be a A. z-test B. t-test Q62: Is this a one-tailed or a two-tailed test? A. )one-tailed B. two-tailed 8