What happens to z for a confidence interval estimate for when the confidence level decreases? A. Z does not change because it does not depend of confidence level B. Za increases because the probablity that the interval estimate does not contain increases C. z, decreases because z, is the confidence level in decimal form D. Z decreases because the probablity that the interval estimate contains decreases E. z, increases because a decreases (5 points) In a random sample of 88, the proportion of the sample with a certain characteristic was 0,6. What is the 95% confidence interval for p? A. (0.49764, 0.70236) B. (0.47287, 0.72713) C. (0.49706, 0.70294) D. (0.46553, 0.73447) E. (0.51409, 0.68591)