3. A survey of 640 people reports that 458 are willing to contribute to a charity. What is the margin of error for this survey in order to achieve a 95% confidence level in
the estimate of the portion of the population willing to contribute to a charity?

Officer brimberry wrote 24 tickets for traffic violations last week, but only 9 tickets this week. what is the percent decrease? give your answer to the nearest tenth of a percent.

I’m really confused and need to learn this

Jack is considering a list of features and fees for current bank: jack plans on using network atms about 4 times per month. what would be jack’s total estimated annual fees for a checking account with direct paycheck deposit, one overdraft per year, and no 2nd copies of statements? a. $44 b. $104 c. $144 d. $176