63 Do you believe in the Bible? Data on the approximately 2,800 Americans who participated in the 2004 National Opinion Research Center’s General Social Survey GSS are saved in the BIBLE file. One question in the survey asked about a person’s belief in the Bible. Suppose you want to estimate the proportion of all Americans who believe that the Bible is the actual word of God and is to be taken literally.

( Note: The variable “Bible1” contains the responses to this question.)

a. Use a 95% confidence interval to estimate the proportion of interest.

b. Give a practical interpretation of the interval you used in part a .

c. Discuss how the survey methodology can affect the validity of the results.