# Question

Suppose that 53% of all registered voters prefer Barack Obama to John McCain.

a. In a random sample of 100 voters, what is the probability that the sample will indicate that Obama will win the election (that is, there will be more votes in the sample for Obama)?

b. In a random sample of 100 voters, what is the probability that the sample will indicate that McCain will win the election?

c. In a random sample of 100 voters, what is the probability that the sample will indicate a dead heat (fifty-fifty)?

d. In a random sample of 100 voters, what is the probability that between 40 and 60 (inclusive) voters will prefer Obama?

a. In a random sample of 100 voters, what is the probability that the sample will indicate that Obama will win the election (that is, there will be more votes in the sample for Obama)?

b. In a random sample of 100 voters, what is the probability that the sample will indicate that McCain will win the election?

c. In a random sample of 100 voters, what is the probability that the sample will indicate a dead heat (fifty-fifty)?

d. In a random sample of 100 voters, what is the probability that between 40 and 60 (inclusive) voters will prefer Obama?

## Answer to relevant Questions

Assume that, on average, 95% of all ticket holders’ show up for a flight. If a plane seats 200 people, how many tickets should be sold to make the chance of an overbooked flight as close as possible to 5%? Consider a large population of shoppers, each of whom spends a certain amount during his or her current shopping trip; the distribution of these amounts is normally distributed with mean $55 and standard deviation $15. We ...Suppose you are sampling from a large population, and you ask the respondents whether they believe men should be allowed to take paid paternity leave from their jobs when they have a new child. Each person you sample is ...A production manager is interested in determining the proportion of defective items in a typical shipment of one of the computer components that her company manufactures. The proportion of defective components is recorded ...In the game of baseball, every time a player bats, he is either successful (gets on base) or he fails (doesn’t get on base). His on-base percentage, usually expressed as a decimal, is the percentage of times he is ...Post your question

0