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
lisov135 [29]
3 years ago
13

You are to take a multiple-choice exam consisting of 100 questions with 5 possible responses to each question. Suppose that you

have not studied and so must guess (randomly select one of the five answers) on each question. Let x represent the number of correct responses on the test. What is your expected score on the exam?
Mathematics
1 answer:
xeze [42]3 years ago
6 0

Answer:

20

Step-by-step explanation:

This is a binomial distribution

n = 100; p = 1/5

E(x) = np = (100)(1/5) = 20

You might be interested in
52 /? = 20/100<br><br>what is the missing denominator??? ​
mezya [45]

Answer:

1140

Step-by-step explanation:

52/x=20/100

52(20)=100(x)

52(20) = 1040

100(x) = 100

1040+100= 1140

8 0
2 years ago
Common types of data patterns that can be identified when examining a time series plot include all of the following except _____
topjm [15]

Answer:

Vertical is the answer

6 0
2 years ago
If 600 cm2 of material is available to make a box with a square base and a closed top, find the maximum volume of the box in cub
dangina [55]
Area of the box:
A = 2 a² + 4 a h = 600 cm²
h = a ( the box is a cube )
A = 6 a² = 600 cm²
a² = 100
a = 10 cm
V = a³ = 10³ = 1000 cm³
4 0
3 years ago
Evaluate when m=20 2 (24)(m)
suter [353]
(24)(20)2= 960 the answer to the question
4 0
3 years ago
Using sigma notation write the geographic series: 6+12+24+48+96
Alika [10]

Answer:

$$\sum_{n=1}^{5} 6(2^{n-1}) $$

Step-by-step explanation:

6 + 12 + 24 + 48 + 96 =

= 6 + 6 * 2 + 6 * 4 + 6 * 8 + 6 * 16

= 6 + 6 * 2^2 + 6 * 2^2 + 6 * 2^3 + 6 * 2 * 4

= 6 * 2^(n - 1)

$$\sum_{n=1}^{5} 6(2^{n-1}) $$

4 0
3 years ago
Other questions:
  • Convert 7(pi)/4 radians to degree measure
    8·1 answer
  • The second angle of a triangle is three times as large as the first. the third angle is 20 degrees less than the sum of the othe
    13·1 answer
  • Solve the equation.<br> –10x +1+ 7x= 37<br> Ox= -15<br> Ox = -12<br> Ox = 12<br> Ox = 15
    14·2 answers
  • You need to test a claim that more than 18% of students at your campus do not know their blood types. Which sampling method woul
    8·1 answer
  • A computer is normally $2788.43 but is discounted to $1023.99. What percent of the original price does Korey pay?​
    8·2 answers
  • How can you write the equation for a linear function if you know only two ordered pairs for the function?
    14·2 answers
  • Sam’s school is selling candles and baskets for a fundraiser. On the first day of sales she sold 11 candles and 3 baskets for a
    14·1 answer
  • A math club has 25 members,of which 11 are males and the rest are females. What is the ratio of males to all cube members ?
    15·2 answers
  • WHAT VARIES MORE 6.6 OR 4.3: NO LINKS
    15·2 answers
  • Let x be the amount of time (in hours) the wait is to get a table at a restaurant. Suppose the cdf is represented by f(x)=⎧⎩⎨⎪⎪⎪
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!