Time remaining:
round your answer to 4 decimal places

label Statistics
account_circle Unassigned
schedule 0 Hours
account_balance_wallet $5

determine the probability that exactly two of these vehicles require warranty service

b.) Compute the mean and standard deviation of this probability distribution (round your answer to 2 decimal places)


Standard Deviation

Oct 22nd, 2017

This is a binomial distribution with p = 0.14 (probability of each Nissan requiring warranty), k = 2 (two Nissans require warranty) and n = 14 (sample size of 14).

So P(k=1) is given by the binomial distribution pdf which is:

P(k) = (n choose k) p^k (1-p)^(n-k)

= n! / [ k!(n-k)! ] x p^k (1-p)^(n-k)

= 14! / [2! x 12!] x 0.14^2 x 0.86^12

= 14x13/2 x 0.0196 x 0.163675

= 0.2919 to 4 decimal places

(for quick questions, please just ask one question per post - if you want help on a set of question you may consider posting a paid assignment, where a tutor can help you with a full exercise and step you through each example)

Mar 10th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
Oct 22nd, 2017
Oct 22nd, 2017
Oct 23rd, 2017
Mark as Final Answer
Unmark as Final Answer
Final Answer

Secure Information

Content will be erased after question is completed.

Final Answer