Question 1: Financial investment ~ Kevin is looking to invest his money in a local investment company called Robin Hood financial services. To ensure his investment is safe and has good returns, he randomly surveys people who invested with the company and asks whether they would recommend the company for investment. Using this data, Kevin wants to estimate the actual proportion of people who recommend Robin Hood financial services for investment. To calculate the required sample size, what value of MEME should we use in the formula below to calculate a 90% confidence interval within 4 percentage points? Give your answer to 4 decimal places. n=p*(1p*)(z*ME)2 Answer: ?

Question 2: Kevin is looking to invest his money in a local investment company called Robin Hood financial services. To ensure his investment is safe and has good returns, he wants to randomly survey people who invested with the company and ask whether they would recommend the company for investment. Kevin wants to estimate the actual proportion of people who recommend Robin Hood financial services for investment. However, Kevin has no preliminary sample data available to him. To calculate the required sample size, what planning value, p*p* should he use in the formula below to calculate a 90% confidence interval within 4 percentage points? Give the exact answer as a decimal.

Question 3: Kevin is looking to invest his money in a local investment company called Robin Hood financial services. To ensure his investment is safe and has good returns, he randomly surveys people who invested with the company and asks whether they would recommend the company for investment. Of the 420 people surveyed, 265 recommend Robin Hood financial services for investment. Using this data, Kevin wants to estimate the actual proportion of people who recommend Robin Hood financial services for investment. To calculate the required sample size, what value of p*p* should we use in the formula below to calculate a 90% confidence interval within 4.00 percentage points? Give your answer to 4 decimal places. Answer:

Question 4: Kevin is looking to invest his money in a local investment company called Robin Hood financial services. To ensure his investment is safe and has good returns, he randomly surveys people who invested with the company and asks whether they would recommend the company for investment. Of the 420 people surveyed, 265 recommend Robin Hood financial services for investment. Using this data, Kevin wants to estimate the actual proportion of people who recommend Robin Hood financial services for investment. To calculate the required sample size, what value of z*z* should we use in the formula below to calculate a 90% confidence interval within 4 percentage points? Give your answer to 4 decimal places. n=p*(1p*)(z*ME)2 Awnser:

Question 5: Kevin is looking to invest his money in a local investment company called Robin Hood financial services. To ensure his investment is safe and has good returns, he randomly surveys people who invested with the company and asks whether they would recommend the company for investment. Of the 420 people surveyed, 265 recommend Robin Hood financial services for investment. Using this data, Kevin wants to estimate the actual proportion of people who recommend Robin Hood financial services for investment. What is the required sample size to calculate a 90% confidence interval within 4.00 percentage points? n=p*(1p*)(z*ME)2n=p*(1-p*)z*ME2 Your Answer: