Please use the below space and provide your answers to all four questions of Problem #11 on page 372-373.

MARK6340 Assignment #5
Please use the below space and provide your answers to all four questions of Problem #11
on page 372-373.
You are the assistant director of political research for the ABC television network, and two
candidates, Joseph Thomas and Ann Martin, are running for president of the United States of
America. You need to furnish a prediction of the percentage of the vote going to Martin,
assuming the election was held today, for tomorrow?s evening newscast. You want to be 95%
confident in your prediction and desire a total precision of 6%.
a. Assume that you have no reliable information concerning the percentage of the population that
prefers Martin. What sample size will you use for the project? (2.5 points)
Type your answer below and show your calculations.

b. Assume that a similar poll, taken 30 days ago, revealed that 40% of the respondents would
vote for Martin. Taking this information into account, what sample size will you use for the
project? (2.5 points)
Type your answer below and show your calculations.

c. Which of the two sample sizes you have just calculated would you prefer to use for your
study? Why? (2.5 points)
Type your answer below.

d. Most polls of this type are conducted by telephone. When a potential respondent answers the
phone, what is the first question you should ask? Why? (2.5 points)
Please type your answer below.

About the author