at data he data 13To determine whether you will accept 14) To determine the ship

Question

at data he data 13To determine whether you will accept 14) To determine the shipment, you randomly select four modems and test them. What is the probability that exactly three of them work?probability that exactly four of them work the shipment, you randomly sele ive you will ion line, ces of the explained modems and test them. What is the accept a. 0.3712 b. 0.3692 c. 0.3652 d. 0.4152 e. 0.4452 a. 0.4130 b. 0.4090 c. 0.4110 d. 0.4100 e. 0.4080 Suppose a compact disk (CD) you just purchased has 15 tracks. After listening to the CD. decide that you like 11 of the songs. The random feature on your CD player will play each of the 19 songs once in a random order. quation to ce of a child How many different ways of the playing order for the first five songs? 17) How many different ways of the playing order for the first four songs you like and the 5th song is NOT you like? 15) a. 360370 b. 360410 c. 360360 d. 360390 e. 360380 a. 31680 b. 31640 c. 31660 d. 31720 e. 31600 How many different ways of the playing order for the first four songs are you like? 16) What is the probability that the first NOY you like song heard is the fifth song played? 18) a. 7920 b. 7900 c. 7940 d. 7960 e. 7980 a. 0.0939 b. 0.0919 c. 0.0879 d. 0.1379 e. 0.1679 know this, 3 of ou will accept y select three Il three modems A fair coin is flipped 9 times and the flipping order is considered. How many total possible outcomes20) an he expected? How many possible outcomes with I head? 10

Explanation / Answer

I will solve only 4 question from 15 to 18

Question 15

As there are 15 songs in the track list. THe track player will play songs in random order if it is less than or equal to 20.

so Number of combinations for initial 5 songs = 15 * 14 * 13 * 12 * 11 = 360360

Question 16

As i like only 11 songs. so out of these 11 songs, the number of combinations for playing 4 songs

= 11 * 10 * 9 * 8 = 7920

Question 17

Now Total combination when initia four songs are of my liking and fifth one is not from my choice.

Total combination = (11 * 10 * 9 * 8) * 4 = 31680

i multiplied it by 4 as there are only 4 songs of not my choice.

Question 18

Pr(First not liked song is the fifth song i played) = 31680/ 360360 = 0.0879

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