1) A new post-surgical treatment is being compared with a standard treatment. Seven subjects receive the new treatment, while seven others [the controls) receive the standard treatment. The recovery times, in days. are given below. Treatment: 12 13 15 19 20 21 27 Control: 18 23 24 30 32 35 39 Let pix represent the population mean for the control patients and let pry represent the population mean for the treated patients. Find a 98% cendence Interval for the difference \"It p}, . Round down the degrees of freedom to the nearest integer and round the answers to three decimal places. The 98% condence interval Isl 23.865 9 Q]. 2) An article compared levels of an insulin sensitivity index Sn patients with high blood pressure and patients with normal blood pressure. Ten patients with high blood pressure had a mean value of 3.4 with a standard deviation of 0.6. and twenty-ve patients with normal blood pressure had a mean value of 7.9 with a standard deviation of 0.6. Units are 1tT5 - min;l - pmol_1. Let \"X represent the population mean for those with normal blood pressure and let y represent the population mean for those with high blood pressure. Find a 93% condence interval for the difference pX pl, . Round down the degrees of freedom to the nearest integer and round the answers to three decimal places. The 93% condence interval ls (- . :| l. 3) An article reported on a study of the effect of temperature and other factors on gas transport coefcients in semi crystalline polymers. The permeability coefcient {In 106 cm3 [STP] {cm - 5 -MPa} of C02 was measured for extruded medium~density polyethylene at both 60C and 61C. The results are as follows: 609054 51 61 67 57 69 60 60 63 58 61C: 58 6O 66 66 68 61 60 Let \"X represent the population mean at 61C and let ,uY represent the population mean at 60C. Find a 95% condence interval for the difference \"X ,uY . Round down the degrees of freedom to the nearest integer and round the answers to three decimal places. The 95% condence interval is (- . ). Required information Oven thermostats were tested by setting them to 350T and measuring the actual temperature of the oven. In a sample of E? thermostats. the average temperature was 348.2\"? and the standard deviation was 45F. Find a 99% upper condence bound for the mean temperature. Round the answer to two decimal places. The 99% upper confidence bound is 34531 a. Required information Oven thermostats were tested by setting them to 350F and measuring the actual temperature of the oven. In a sample of 67 thermostats, the average temperature was 348.2\"F and the standard deviatlon was 46F. The claim Is made that the mean temperature Is less than 349.37F. With what level of condence can this statement be made? Express the answer as a percent and round to two decimal places. The level of condence is |:] 96