Estimating Voter Support for Brown

The video tutorial explains how to calculate the percentage of voters who support a candidate in an election based on a sample poll. It demonstrates converting a fraction to a percentage, rounding decimals, and estimating the total number of voters for a candidate using both rounded and exact values. The tutorial emphasizes the importance of accuracy in statistical calculations.

How many registered voters are there in the city of Globe?

• 6,000

• 8,000

• 7,000

• 7,600

How many voters were surveyed in the telephone poll?

• 600

• 196

• 358

• 7600

What fraction of the surveyed voters said they would vote for Brown?

• 196/600

• 358/600

• 46/600

• 600/7600

What is the percentage of surveyed voters who said they would vote for Brown, rounded to the nearest tenth?

• 31.5%

• 33.0%

• 30.0%

• 32.7%

What is the decimal representation of the fraction of voters who said they would vote for Brown?

• 0.327

• 0.358

• 0.196

• 0.600

Using the sample statistic, approximately how many of the 7,600 registered voters are expected to vote for Brown?

• 2,483

• 2,485

• 3,000

• 2,400

Why is there an error when using the rounded percentage to estimate the number of voters for Brown?

• Because the percentage is rounded

• Because the fraction is incorrect

• Because the number of voters is too large

• Because the poll was not random

What is the more accurate method to estimate the number of voters for Brown?

• Using a smaller sample size

• Using the rounded percentage

• Using the exact fraction

• Using a different poll

What is the estimated number of voters for Brown using the exact fraction?

• 2,400

• 2,485

• 2,483

• 2,500

What is the estimated number of voters for Brown using the rounded percentage?

• 2,483

• 2,400

• 2,500

• 2,485