Alice is simulating a random sample on voter preferences and puts five red marbles, five green marbles, and five blue marbles in a bag. Not knowing what is in the bag, Bob draws three of them, pulling two green and one blue. What can Bob conclude?Color Red Green BlueIn Bag 5 5 5Drawn Out 0 2 1No voter in the population prefers the red candidate.The sample is representative of the population.Based on the sample, the green candidate is more likely to win.Bob's sampling technique must have been flawed since there are no red marbles in the sample.

A bag contains one red marble and one blue marble. The diagrams show the possible outcomes of randomly choosing two marbles using different methods. For each method, determine whether the marbles were selected with or without replacement.

A political pollster is conducting an analysis of sample results in order to make predictions on election night.Assuming a two-candidate election,if a specific candidate receives at least 54%of the vote in the sample,that candidate will be forecast as the winner of the election.You select a random sample of 100 voters. Suppose that the sample size was increased to 400.Repeat process(a)through(c),using this new sample size.Comment on the difference. The probability isthat a candidate will be forecast as the winner when the popuio percentage of her vote is50.1%. Choose the correct answer below. A. Increasing the sample size by a factor of 4 increases the standard error by a factor of 2. Changing the standard error doubles the magnitude of the standardized​ Z-value. B. Increasing the sample size by a factor of 4 decreases the standard error by a factor of 2. Changing the standard error doubles the magnitude of the standardized​ Z-value. C. Increasing the sample size by a factor of 4 increases the standard error by a factor of 2. Changing the standard error decreases the standardized​ Z-value to half of its original value. D. Increasing the sample size by a factor of 4 decreases the standard error by a factor of 2. Changing the standard error decreases the standardized​ Z-value to half of its original value.

Candice put equal sized marbles into a bowl. Then, she shook the bowl until 3 marbles fell out.Is this sample of the marbles likely to be biased?yesnoSubmit

A political candidate surveys voters to learn about their opinions on key issues. The politician’s data team notices that most respondents are people who have already voted in the current election. The fairness of the survey could be improved by over-sampling people from which group?1 pointPeople who have not yet voted in the electionPeople who voted against the candidate in the current electionFirst-time voters who already voted in the current electionPeople who voted for the candidate in the current election

You flip a coin and draw a marble at random from a bag containing two purple marbles and one white marble.The number of possible outcomes in the sample space is