A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that they will vote for the candidate, 100 voters indicate that they will vote for his opponent, and 15 voters are undecided.
a. What is the population parameter of interest?
b. What is the value of the sample statistic that might be used to estimate the population parameter?
Population parameter percent of all voters who will vote for the candidate
the value of the sample statistic would be 35/150 and this could be used to estimate the population parameter.
a. The population parameter of interest in this case is the proportion of voters who will vote for the candidate running for the political office.
b. The value of the sample statistic that might be used to estimate the population parameter is the proportion of voters in the sample who indicate they will vote for the candidate. In this case, it would be calculated as the number of voters who will vote for the candidate divided by the total number of voters in the sample. From the given information, the proportion would be calculated as 35/150 = 0.2333.