Try It 3. Four out of five randomly chosen teenagers support the new landfill. So, you conclude that 80% of the residents of your town support the new landfill Is the conclusion valid? Explain.

Sean is the star shortstop for his baseball team. He notices that his team typically scores about half as many runs as he has singles, and that his team is about 10% more likely to win a game for each run scored.  How likely is it that the team wins if he has 6 singles?  How many singles did Sean hit if the team was 70% likely to win?

The election is coming up in three weeks, and you’d like one last poll to see where things stand. Last month’s poll showed your candidate had 55% support, and you want to know what percent of the voters would vote for your candidate if the election were held today. You want 95% confidence in your answer, with a margin of error no more than 3%. Determine how many voters you need to survey.

I need help with 2, 3 and 6.

I am only given one attempt at this. I need help.  A newspaper report conducted a survey of 753 people in New York City and found that 27% of the population believe that the Yankees will miss the playoffs this year. In the accompanying dialogue, the report states, we are 99% confident that the true proportion of people in New York City who believe that the Yankees will miss the playoffs this year lies between 23% and 31% . What does 4% represent in the report? A. a parameterB. a statisticC. a confidence intervalD. a margin of errorE. a confidence level

In fall 2014, 36% of applicants with a Math SAT of 700 or more were admitted by a certain university, while 14% with a Math SAT of less than 700 were admitted. Further, 34% of all applicants had a Math SAT score of 700 or more. What percentage of admitted applicants had a Math SAT of 700 or more? (Round your answer to the nearest percentage point.) %

In 2016 the Better Business Bureau settled 84% of complaints they received in the United States. Suppose you have been hired by the Better Business Bureau to investigate the complaints they received this year involving new car dealers. You plan to select a sample of new car dealer complaints to estimate the proportion of complaints the Better Business Bureau is able to settle. Assume the population proportion of complaints settled for new car dealers is 0.84, the same as the overall proportion of complaints settled in 2016. Use the z-table. a. Suppose you select a sample of 200 complaints involving new car dealers. Show the sampling distribution of p. E(p) (to 2 decimals) (to 4 decimals) b. Based upon a sample of 200 complaints, what is the probability that the sample proportion will be within 0.04 of the population proportion (to 4 decimals)? probability : = c. Suppose you select a sample of 460 complaints involving new car dealers. Show the sampling distribution of p. E(F) (to 2…

A survey asked participants if they liked vanilla ice cream, chocolate ice cream, both, or neither. Of those surveyed, 44% liked vanilla, 68% liked chocolate, and 19% liked neither. What percentage of the students liked both vanilla and chocolate? (1) 17% (3) 27% (2) 22% (4) 31%

You are testing the claim that the proportion of men who own cats is smaller than the proportion of women who own cats.You sample 110 men, and 75% own cats.You sample 150 women, and 65% own cats.Find the proportion of the pooled samples, (pcpc), as a decimal, rounded to two decimal places.

Can someone help me solve this please?