new cars, each crash-tested car is given a rating ranging from one star to five
ID: 3369586 • Letter: N
Question
new cars, each crash-tested car is given a rating ranging from one star to five stars; the more stars in the rating In a that 1 of the 98 cars is selected at random, and let x equal the number of stars in the cars EE Click the lcon to viow the summary of the ratings a. Use the system for i the driver-side star ratings for 98 cars is reproduced in the accompanying table. Assume star rating. Complete parts a through d. ratings. in the summary to find the probability distribution for x. Complete the table below p(x) 0.0714 0.1429 0.5816 02041 to b, Find P(x-3). P(x-3) . ?. 1429 (Round to four decimal places as needed.) e. Find P(xs 2). P(x s2)-0.0714 (Round to four decimal places as needed) d. Find-E(x) and practically interpret the result. ?-U (Rouhd to four decimal places as needed.)Explanation / Answer
Solution :
Given that x p(x) x*P(x)
1 0 0
2 0.0714 0.1428
3 0.1429 0.4287
4 0.5816 2.3264
5 0.2051 1.0255
d. ? = E(x) = ? x*p(x)
= 0 + 0.1428 + 0.4287 + 2.3264 + 1.0255
= 3.9234
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.