Researchers are interested to see if Oral Contraceptive (OC) use increases total cholesterol. Cholesterol levels of 35 women age 35-50 currently taking OC and 35 women aged 35-50 not currently taking OC were measured. Suppose the above study results in the following 95% confidence interval for (OC) (noOC): (-1.76, 9.14) mg/dL, (where OC and noOC, are the population average cholesterol levels for individuals taking and not taking OC, respectively). Interpret this interval.

-We are 99% confident that the true difference in means between those who use oral contraceptives and those who do not is contained in the interval from -1.76 mg/dL to 9.14 mg/dL.

-We are 95% confident that the difference between the sample means between OC and non-Oc users is in the interval

-We are 95% confident that the true difference in means between those who use oral contraceptives and those who do not is contained in the interval from -1.76 mg/dL to 9.14 mg/dL.

- The true difference in means between those who use oral contraceptives and those who do not is negative