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
d1i1m1o1n [39]
3 years ago
6

A short quiz has two true-false questions and one multiple-choice question with four possible answers. A student guesses at each

question. Assuming the choices are all equally likely and the questions are independent of each other, the following is the probability distribution of the number of answers guessed correctly. What is the Probability of two or more questions right? X 0 1 2 3 P(X) .1875 .4375 .3125 .0625
Mathematics
1 answer:
UNO [17]3 years ago
7 0

Answer:

P(X\geq 2) = 0.375

Step-by-step explanation:

Given

X   ------0 --------1 -------- 2--------- 3

P(X) --.1875 -.4375 ---.3125 --- .0625

Required

Determine P(X\geq 2)

This is calculated as:

P(X\geq 2) = P(X = 2) + P(X = 3)

P(X\geq 2) = 0.3125 + 0.0625

P(X\geq 2) = 0.375

You might be interested in
F(x) = x2 – 3x + 5 g(x) = V22 – 2x Calculate g (f (1)).​
erik [133]

Step-by-step explanation:

So first of all we plug in 1 into f(x) and the result of that into g(x).

f(1)=(1)^2-3(1)+5

=1-3+5

=3

g(3)=(3)(22)-2(3)

=66-6

=60

3 0
3 years ago
What is 79 1/2% of $7570?
Mariulka [41]

Answer:

$6018.15

Step-by-step explanation:

"is" number always goes on TOP "of" number.

"is" number is 79 1/2%

"of" number is $7570

<em>79 1</em><em>/</em><em>2</em><em> </em><em>%</em><em> </em><em>/</em><em> </em><em>$</em><em>7570</em><em> </em><em>*</em><em> </em><em>100</em><em> </em><em>=</em><em> </em><em>$</em><em>6018.15</em><em> </em>

<em>To</em><em> </em><em>find</em><em> </em><em>out</em><em> </em><em>if</em><em> </em><em>the</em><em> </em><em>answer</em><em> </em><em>is</em><em> </em><em>correct</em><em> </em><em>:</em>

<em>6018.15</em><em> </em><em>/</em><em> </em><em>7570</em><em> </em><em>*</em><em> </em><em>100</em><em> </em><em>=</em><em> </em><em>79.12</em><em>%</em>

5 0
3 years ago
Segment AB is congruent to segment AB.
galben [10]

Step-by-step explanation:

i don't know sister/ boy

7 0
3 years ago
Who needs free 50 points only two winners hurry up
jolli1 [7]

Answer:

ty I need points your the best

Step-by-step explanation:

.

4 0
3 years ago
Read 2 more answers
Helpsssssssssssssss!!!!!!!!!!!!!!!!!!!!
serious [3.7K]

Answer:

the common differnence is positive 3

Step-by-step explanation:

its going back by 3 since its going back to 0 its positive

8 0
2 years ago
Read 2 more answers
Other questions:
  • I am so confused , what is the answer to 5x=-2x+49?!​
    11·2 answers
  • Graham uses a 10 by 10 grid to model a decreasing pattern. He cuts off a section representing a percent of the current area so t
    9·2 answers
  • suppose 200 students take an exam, graded on a scale of 0-100%. The median exam grade was 78%, the mean exam grade was 68%, and
    12·1 answer
  • Mr gardener is making 6 treat bags he has 185 chocolate covered raisins to share evenly among the treat bags.
    8·2 answers
  • Which number is equivalent to<br> A 2<br> B 9<br> с<br> 81<br> 729
    11·2 answers
  • Suppose the radius of a circle is 5. What is its circumference?
    7·2 answers
  • To prepare for wrestling season, Tommy wants to eat 24 grams of protein at breakfast. He knows that there are 3 grams of protein
    11·2 answers
  • Lynn gave her nail technician a $5.10 tip. The tip was 15% of the cost of the manicure. Write an
    7·1 answer
  • Help pldssshdhhfhfhtj
    11·2 answers
  • Please help me please
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!