Professional Internship l x EB Homework 8 Google She x Dropb

Professional Internship l x EB Homework 8 -Google She x Dropbox Folders 2015/1 x W Exam 2.docx My Questions Yahoo Ans X C chrome extension //bpmcpldpdmajfigpchkicefoigmkfalc/views/app.html Exam 2.docx File Edit Format Help 2. As part of a promotion to attract new customers, a bank launches the \"Wheel of Deposits.\" Each customer opening a new savings account has a chance to spin the wheel. The unbiased wheel is divided into 10 slices that is labeled with an amount that will be deposited into his/her new account. Five of the slices are marked $10, two are marked $20, two are marked $30, and one is marked with $100. a. What is the chance that a customer gets more than a $10 deposit? b. What is the chance that a customer gets a $20 or a $30 deposited? c. What is the chance that the next two customers each get $10 deposits? LP X Dow a Share

Solution

a)
Chance a customer gets more than 10 deposit =1- chance he gets <=10 deposit

= 1-(5/10) = 0.5

b) Chance for 20 or 30 = chance for 20 + chance for 30 (since mutually exclusive)

=(2+2)/10 = 0.4

c) P for getting 10 deposit = 0.5

No of persons getting 10 is binomial with two outcomes and independent trials

Hence chance that next two customer get 10 deposits = 0.5(0.5) = 0.25