بليززززز ابغى حل هذه الاسئلة (احصاء )

[عبير الفيفي]

السلام
ضروري الله يسعدكم ابغى حل الاسئلة ماباقي شي على الاختبار وانا مو عارفة احلها

11.

The probability of randomly selecting 3 science books and 4 math books from 8 science
books and 9 math books is

A)

0.363

B)

0.5

C)

0.76

D) 0.001

15.

How many ways can a person select 4 television commercials from 33 television
commercials?

A)

33!
(33-4)!

B)

33!
(4!  29!)

C)

433

D)

4
33

16.

If 4 different-sized washers ( غسالات ) are arranged in a row, then the probability that they
will be arranged in order of size is

A)

4!

B)

1
24

C)

1
12

D)

1

4

22.

A student takes a 6 question multiple choice quiz with 4 choices for each question. If the
student guesses at random on each question, what is the probability that the student gets
exactly 3 questions correct?

A)

0.088

B)

0.0512

C)

0.132

D) 0.022