Answered You can hire a professional tutor to get the answer.
QUESTION
Doc link for the data: https://docs.google.com/spreadsheets/d/1QorJa5qWY1dyH7TzTvXhbHpolBNq4w_TwMJin91nCeA/edit?
Doc link for the data: https://docs.google.com/spreadsheets/d/1QorJa5qWY1dyH7TzTvXhbHpolBNq4w_TwMJin91nCeA/edit?usp=sharing
Use the data:
- Perform a statistical test to see whether the proportion of members who would recommend the Bank to their family and friends have increased because of the change.
- Construct a 99% confidence interval for the difference of the proportions, before and after the change, of members who would recommend the Bank to their family and friends.
