askmore

版权声明：转载时请以超链接形式标明文章原始出处和作者信息及本声明
http://ask4more.blogbus.com/logs/79358569.html

An Interesting Problem from Kenneth Baclawski's "Introduction to Probability with R"

Exercise 1.20 (Prendergast)

Two technicians are discussing the relative merits of two rockets. One rocket has

two engines, the other four. The engines used are all identical. To ensure success

the engines are somewhat redundant: the rocket will achieve its mission even if

half its engines fail. The first technician argues that the four-engine rocket ought

to be the better one. The second technician replies, "Although I cannot reveal the

failure probability of an engine, because it is classified top secret, I can assure you

that either rocket is as likely to succeed as the other."

The first technician replies,"Thank you. What you just told me allows me to

compute the failure probability both for an engine and for a rocket."

Can you do this computation also? (Exercise 1.20, p. 21)

the answer is:

1/3, 1/9