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
Fudgin [204]
3 years ago
13

(a) Fill in the tavle below to complete the proability distrubution of X

Mathematics
1 answer:
Aliun [14]3 years ago
6 0

Answer:

2.6

Step-by-step explanation:

Given :

x 1 2 3 4

P(x) 0.3 0.2 ? 0.4

Σp(x) = 1

Hence, 0.3 + 0.2 +? + 0.4 = 1

0.9 +? = 1

? = 1 - 0.9

? = 0.1

For the mean :

E(X) = ΣX*P(X)

(1 * 0.3) + (2 * 0.2) + (3 *0.1) + (4* 0.4)

0.3 + 0.4 + 0.3 + 1.6 = 2.6

Hence, the mean = 2.6

You might be interested in
A chemist has 5 1/10 kg of calcium chloride. If she uses 0.15 kg of the compound each time she performs and experiment, for how
Licemer1 [7]

Answer:

5 1/10 ÷ .15 is 34 so she will be able to perform 34 experiments

7 0
2 years ago
- 7 x2<br>15<br>3<br>2 +7 x - 5<br>3<br>15<br>12​
jeka94

Answer:What number must be multiplied by 3 to obtain 15? ... Example 11 A student solved the equation 5x - 3 = 4x + 2 and found an answer of x = 6. ... Example 12 3x = 6 and 2x + 1 = 5 are equivalent because in both cases x = 2 is a solution. ... + 3x = 7x + 2 - 4x can be changed to a simple equation x = 3, and the equation x = 3 is .

Step-by-step explanation:

7 0
3 years ago
-8xc = 1 solve for x
Nastasia [14]

Answer:

[-8c]⁻¹ = x

Step-by-step explanation:

-8xc = 1

____ ___

-8c -8c

x =   - \frac{1}{8c}  \\  \\ or \\  \\ x = ({ -8c})^{-1}

This, according to the Negative Exponential Rule [Reverse], is how you write this as a rational exponent. You bring the denominator to the numerator while ALTERING THE INTEGER SYMBOL FROM POSITIVE TO NEGATIVE:

b⁻ⁿ = 1\bⁿ

I am joyous to assist you anytime.

3 0
3 years ago
How do you round 32.697 to the nearest one tents and hundreths.
natulia [17]
Neaest tenths is 32.7
6 0
3 years ago
Read 2 more answers
Find the area of the trapezoidal cross-section of the irrigation canal shown below. Your answer will be in terms of h, w, and θ.
Svet_ta [14]
S=[h(2h/tanθ+w+w)]/2
6 0
3 years ago
Other questions:
  • Carlotta thinks that 3y + 5y3 is the same as 8y4. Which statement shows that it is NOT the same?
    6·2 answers
  • Hey guys happy Tuesday ! I need some home work help ASAP work and answer pls love y’all ❤️
    7·1 answer
  • Factor this: a^n+a^n+1
    10·1 answer
  • Zaire sells 24 slices of blueberry pie and 15 slices if cherry pie. what was his profit?
    9·1 answer
  • A BMW car on a truck weighs 20 tons plus 1 ton per cubic yard of x cubic yards of spares that it carries. The total weight of a
    14·2 answers
  • 2.0) 864= equals what?
    5·1 answer
  • I don't really know how to start
    8·2 answers
  • Write an equation for the line that passes through the given point<br> 1. (4,-1), (0.5)
    9·1 answer
  • Which expression is equivalent to -2(5x - 0.75)
    8·2 answers
  • Can anyone please help me solve it<br>11,12 (1)(2)(3),13 this is all​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!