QUESTION 2 A 90% confidence interval means that . (circle one answer) (a) There is a 90% probability that the unknown parameter is between the lower and upper bound of the confidence interval. (b) There is a 10% probability that the unknown parameter is between the lower and the upper bound of the confidence interval. (c) A 90% of the samples will result in an interval that includes the unknown parameter. (d) A 10% of the samples will result in an interval that includes the unknown parameter. O Answer (c) O Answer (b) O Answer (a) Answer (d) 5 points SavedA simple random sample of size n = 65 is drawn from a population. The sample mean was found to be 583.1 and the standard deviation was found to be 114.9. A Student's t-test was performed to determine if the population mean is different from 600 at the a = 0.1 level of significance and the following output was obtained: to = -1.186, P(t 0.1 to conclude that the population mean is different from 600. (b) There is sufficient evidence, p > 0.1, to conclude that the population mean is different from 600. (c) The Student's t-test is not appropriate test to use to make conclusions about the mean. (d) Given that p > 0.1 we conclude that the population mean is different from 600. O Answer (d) O Answer (c) O Answer (b) O Answer (a)