View the step-by-step solution to:

Need work A marketing survey of 2000 randomly-selected convenience store customers found that 1415 of them bought a glazed donut yesterday.

Need work

A marketing survey of 2000 randomly-selected convenience store customers found that 1415 of them bought a glazed donut yesterday. 1605 said they bought a frosted crème-filled donut yesterday. 180 customers said they bought neither yesterday.

   a. What is the probability that a single randomly-selected customer bought only a frosted crème-filled donut yesterday?   

Enter answer rounded to the nearest thousandth (3 places after decimal).


   b. For the Venn diagram above, let G = {customers who bought a glazed donut yesterday} and = {customers who bought a frosted crème-filled donut yesterday}.  Determine the number of attendees belonging to each of the diagram's regions I, II, III, IV in this order.


30,40,50,60       12,88,123,649


c.If the probability distribution for the random variable X is given in the table, what is the expected value of X?   

Enter answer - with its sign - rounded to nearest hundredth (2 places after decimal)



xi -30 10 20 60

pi 0.40 0.30 0.20 0.10


   E(x) =

Top Answer

a)  P(Customer bought  only  a frosted crème-filled donut) = 0.2025 b) Venn diagram above:... View the full answer

A1.PNG

Sign up to view the full answer

Other Answers

(a) The probability that a single randomly-selected customer bought... View the full answer

E2.JPG

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

-

Educational Resources
  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question
Ask a homework question - tutors are online