Question 1.A bank randomly selected 247 checking account custom

1.A bank randomly selected 247 checking account customers and found that 107 of them also had savings accounts at this same bank. Construct a 90% confidence interval for the true proportion of checking account customers who also have savings accounts. (Round your answers to three decimal places.)
lower limit:
upper limit:

2. Lung cancer is the leading cause of cancer deaths in both women and men in the United States, Canada, and China. In several other countries, lung cancer is the number one cause of cancer deaths in men and the second of third cause among women. Only about 14% of all people who develop lung cancer survive for 5 years. Suppose you wanted to see if this survival rate were still true. How large a sample would you need to take to estimate the true proportion surviving for 5 years after diagnosis to within 0.4% with 95% confidence? (Use the 14% as the value of p.)

3. Find the following. (Round your answers to two decimal places.)
(a) t(13, 0.005) =
(b) t(27, 0.05) =
(c) t(50, 0.005) =
(d) t(12, 0.025) =
Additional Requirements

Min Pages: 1
Level of Detail: Only answer needed
Other Requirements: I won’t increase the price. I will give tip and good review, thank you

Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteDemy. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.