8, + -12 points 014 Submissions used My Notes ÷ Ask Your Teacher A particular te

Question

8, + -12 points 014 Submissions used My Notes ÷ Ask Your Teacher A particular telephone number is used to receive both voice calls and fax messages. Suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (Round your answers to three decimal places.) (a) What is the probability that at most 7 of the calls involve a fax message? (b) What is the probability that exactly 7 of the calls involve a fax message? (c) What is the probability that at least 7 of the calls involve a fax message? (d) What is the probability that more than 7 of the calls involve a fax message? You may need to use the appropriate table in the Appendix of Tables to answer this question. Need Help? Talk to a Tutor Show My Work (Optional @

Explanation / Answer

Here,. p = 0.25. , n = 25

X is random variable of number of fax massage received.

By using binomial probability

a) P ( x<= 7) = 0.727

b) P ( x = 7 ) = 0.166

c) P ( x >= 7) = 0.439

d) P ( x > 7 ) = 0.274

Welcome to chegg.....

Have a nice day...

Related Questions

Navigate

• Browse (All)
• Browse 8
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.