Sketch the distribution and shade the area corresponding to the probability you want to find. Then, find the probability. According to Statista, Dell Market share in PC sales in the United States is 25%. Suppose a researcher randomly selects 120 recent purchases of PCs in the United States. A. What is the probability that more than 49 customers bought a Dell computer? B. What is the probability that between 28 and 38 customers (inclusive) bought a Dell computer? C. What is the probability that fewer than 23 customers bought a Dell computer? D. What is the probability that exactly 33 customers bought a Dell computer?
Added by Amanda P.
Close
Step 1
We can use the binomial probability formula to calculate this: P(X > 49) = 1 - P(X <= 49) Where X follows a binomial distribution with n = 120 (number of trials) and p = 0.25 (probability of success). Using a binomial calculator or software, we can find: P(X Show more…
Show all steps
Your feedback will help us improve your experience
Niamat Khuda and 92 other Microeconomics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Market researcher Gartner Dataquest reports that Dell Computer controls 27% of the PC market in the United States. Suppose a business researcher randomly selects 130 recent purchasers of PCs. a. What is the probability that more than 39 PC purchasers bought a Dell computer? b. What is the probability that between 28 and 38 PC purchasers (inclusive) bought a Dell computer? c. What is the probability that fewer than 23 PC purchasers bought a Dell computer? d. What is the probability that exactly 33 PC purchasers bought a Dell computer?
Keondre P.
6.23. According to the International Data Corporation, HP is the leading company in the United States in PC sales with about 26% of the market share. Suppose a business researcher randomly selects 130 recent purchasers of PCs in the United States. a. What is the probability that more than 39 PC purchasers bought an HP computer? b. What is the probability that between 28 and 38 PC purchasers (inclusive) bought an HP computer? c. What is the probability that fewer than 23 PC purchasers bought an HP computer? d. What is the probability that exactly 33 PC purchasers bought an HP computer?
Adi S.
Recent market research reported that Hewlett-Packard (HP) controlled 23% of the personal computer (PC) market in Canada. Suppose you randomly selected 150 recent purchasers of PCs in Canada. What is the probability that exactly 33 of them bought an HP computer? (Use an appropriate approximate method if you are able to) A. 22.82% B. 14.81% C. 0% -- the answer cannot be calculated D. 7.64%
T. L.
Recommended Textbooks
Principles of Economics
Principles of Microeconomics for AP® Courses
Economics
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD