6. All of the following statements about confidence intervalsare correct EXCEPT?: *
(A) Holding other numbers fixed, increasing the level of confidencewill result in a wider confidence interval.
(B) Holding other numbers fixed, increasing sample size will resultin a narrower confidence interval.
(C) The sample mean / proportion will always be inside theconfidence interval.
(D) The population mean / proportion will always be inside theconfidence interval.

7. Weight, in pounds, is measured for each person in a sample.After the data are collected, all the weight measurements areconverted from pounds to kilograms by multiplying each measurementby 2.2. Which of the following statistics will remain the same forboth units of measure?: *
(A) The z-scores of the weight measurements.
(B) The maximum of the weight measurements.
(C) The standard deviation of the weight measurements.
(D) The median of the weight measurements.
(E) The mean of the weight measurements.

8. The weight of a carton of strawberries has mean of 16 ouncesand standard deviation of 1.5 ounces. What can you say about thedistribution of the mean weight of a random sample of 41 cartons?:*
(A) Mean = 16, standard error = 1.5, unknown shape
(B) Mean = 16, standard error = 1.5, approximately normal
(C) Mean = 16, standard error = 0.234, unknown shape
(D) Mean = 16, standard error = 0.234, approximately normal