Solved
Percentage
Posted on 2016-07-29
Can you please explain it how these answers are calculated? Thanks.
(a) 6.608 (approx 7)
(b) 0.0045
(c) 0.0036
(d) B
A center that studies voting in a particular country indicated that 59% of the voting-age voters cast ballots in a presidential election. It also indicated in the west, 39.9% of voting-age voters voted for a Democrat as a representative, an increase from 36.1% in the previous
election. A start-up company in the western region of the country has 10 employees. Use this information to complete parts a through d.
a. How many of the employees would you expect to have voted for a Democrat as a representative
____ (Type an integer or a decimal.)
b. All of the employees indicated that they voted in the presidential election. Determine the probability of this assuming they followed the
national trend. ____ (Round to four decimal places as needed.)
c. Nine of the employees voted for a Democratic representative. Determine the probability that at least 9 of the employees would vote for
the Democrat if they followed the national trend. ____ (Round to four decimal places as needed.)
d. Based on your calculations in parts b and c, do the employees reflect the national trend Support your answer with statistical
calculations and reasoning.
A. No, because the probabilities found in parts b and c are very small, which means that the assumption that the employees followed the
national trend is not valid.
B. Yes, because the probabilities found in parts b and c are very small, which means that the assumption that the employees followed the
national trend could be valid.
C. Yes, because the probabilities found in parts b and c are not that small, which means that the assumption that the employees followed
the national trend could be valid.
D. No, because the probabilities found in parts b and c are not that small, which means that the assumption that the employees followed
the national trend is not valid.