1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lukranit [14]
3 years ago
7

A college library has five copies of a certain text on reserve. Two copies (1 and 2) are first printings, and the other three (3

, 4, and 5) are second printings. A student examines these books in random order, stopping only when a second printing has been selected. One possible outcome is 5, and another is 213.
A) List the outcomes in S.
B) Let A denote the event that exactly one book must be examined. Whatoutcomes are in A?
C) Let B be the event that book 5 is the one selected. What outcomes arein B?
D) Let C be the event that book 1 is not examined. What outcomes are inC?
Mathematics
1 answer:
sleet_krkn [62]3 years ago
6 0

Answer:

B) Outcomes in A = {3, 4, 5} .

C) Outcomes in B = {5, 15, 25, 125, 215} .

D) Outcomes in C = {3, 4, 5, 23, 24, 25} .

Step-by-step explanation:

We are given that a college library has five copies of a certain text on reserve. From which two copies (1 and 2) are of first printings, and the other three (3, 4, and 5) are of second printings.

Also, it is stated that a student will stop examining the books only when a second printing has been selected.

A) The outcomes in S are :

      <u> Number of outcomes</u>                                 <u>Selection of Outcomes</u>

                  1                                                                          3

                  2                                                                         4

                  3                                                                          5

                  4                                                                         13

                  5                                                                         14

                  6                                                                         15

                  7                                                                         23

                  8                                                                         24

                  9                                                                         25

                 10                                                                         123

                 11                                                                          124

                 12                                                                          125

                 13                                                                          213

                 14                                                                           214

                 15                                                                            215

Here outcome 123 means 1st copy of first printing is examined then 2nd copy of first printing is examined and then 3rd copy of second printing is examined and then the student stops.

B) <em>A denote the event that exactly one book must be examined.</em>

 So, the outcomes in A will be outcome number 1, 2 and 3 corresponding to selection 3, 4 and 5 of second printing because in these outcomes only one book is examined.

Hence, outcomes in A = {3, 4, 5} .

C) <em>B be the event that book 5 is the one selected</em>. It means all those outcomes in which book 5 was last examined. So, the outcomes in B will be outcome number 3, 6, 9, 12, 15 corresponding to selection 5, 15, 25, 125, 215

Hence, outcomes in B = {5, 15, 25, 125, 215} .

D) <em>C be the event that book 1 is not examined</em> which is outcome number 1, 2, 3, 7, 8, 9 corresponding to selection 3, 4, 5, 23, 24, 25 .

Hence, outcomes in C = {3, 4, 5, 23, 24, 25} .

You might be interested in
Solve the inequality<br> x/3 - 2 &lt;4
Afina-wow [57]

Answer:

brainliest please

Step-by-step explanation:

x/3-2<4

x/3<6

x<18

8 0
3 years ago
Which angle in triangle DEF has the largest measure?​
nordsb [41]

Answer:

D is the largest angle

Step-by-step explanation:

The angle opposite the largest side is the largest and the angle opposite the smallest side is the smallest.

Since 12 is the largest side, angle D is the largest

8 is the smallest side, F is the smallest angle

7 0
3 years ago
The Gaineys and the Arnolds are saving money for a trip to Utah to go snowboarding. The Arnolds are going to save a nickel on th
Debora [2.8K]

Write a recursive and explicit formula for each option.

  • The Arnolds

Save a nickel on the first day of the month and then double the amount each day for a month

=> a1 =0.05

=> a2 = a1* 2 = 0.05*2

=> a3 = a2*2 = a1* 2*2

..............................................

=>recursive an = a_{n-1} *2

=> explicit an = 0.05*2^{n-1}

  • The Gaineys

Start their savings by saving  $10  on the first day and then  $10  each day of the month

=> a1 = 10

=> a2 = a1 + 10 = 20

=> a3 = a2 +10 = 20 +10 =30

........................................................

=> recursive an = a_{n-1} +10

=> explicit an = 10 + 10( n-1)

Hope it will find you well.

8 0
2 years ago
Kate begins solving the equation (6x – 3) = (6x – 4). Her work is correct and is shown below. (6x – 3) = (6x – 4) 4x – 2 = 3x –
Alexxandr [17]

Answer:

x = 0.

Step-by-step explanation:

4x = 3x

4x - 3x = 0

x = 0

Hope this helps!

3 0
3 years ago
The two cones below are similar. What is the height of the smaller cone?
Ugo [173]
Given that the two cone are similar, then
3/7 = x/5
7x = 15
x = 15/7
6 0
3 years ago
Read 2 more answers
Other questions:
  • he original price of a tractor was $45,000. The price of the tractor decreases at a steady rate of 8.3% per year. What is the va
    12·1 answer
  • Neena is listening to a song. It has a consistent beat. She counts 11 beats in
    15·1 answer
  • 3. Please show your work to find the mean and standard deviation of the data. Round to the nearest tenth.
    10·1 answer
  • −12÷2/3 ? PLEASE ANSWER
    10·2 answers
  • A car travels 480 miles on 15 gallons of gasoline. How many miles does the car travel per gallon?
    7·2 answers
  • Which is equivalent to 80^1/4x
    15·1 answer
  • A blank is a unit rate with a denominator of 1 unit
    14·1 answer
  • Solve for x 4(1-x)+2x= -3(x+1)
    13·1 answer
  • What is the slope and y-intercept of the equation y=3x - 9.
    11·1 answer
  • Which of these is the algebraic expression for "5 times the sum of 2 and y?" 052+ y O2 +5. O2(5 + y) O 5(2 + y)​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!