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serious [3.7K]
3 years ago
6

PLS HELP ME ASAP FOR 7, 8, and 9. A and B (SHOW WORK FOR ALL!! + LOTS OF POINTS

Mathematics
1 answer:
KengaRu [80]3 years ago
5 0
I can't exactly see those. So i can't help you sorry
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Please please help!!!! According to the probability distribution below, what is the expected value of X? X 0 1 2 3 4 5 P(X) 0.3
Novay_Z [31]

Answer:

D.) The expected value is 1.78

Step-by-step explanation:

The expected value of a probability distribution is evaluated using the formula.

Expected Value, E(X)=\sum^{n}_{i=1}x_iP(x_i)

Therefore, from the given probability distribution, we have:

E(X)=(0*0.3)+(1*0.2)+(2*0.16)+(3*0.2)+(4*0.04)+(5*0.1)

E(X)=1.78

The Expected value of X is 1.78.

The correct option is D.

4 0
3 years ago
Please help me out!!!!!
olga2289 [7]

Answer:

D. 9

Step-by-step explanation:

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2 years ago
What is the value of the expression below when y 8 and z = 8? 9y + 3z​
aleksley [76]

Answer:

96

Step-by-step explanation:

8y+3z

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72+24

96

6 0
3 years ago
Jordan solved the equation −7x + 25 = 48; his work is shown below. Identify the error and where it was made. −7x + 25 = 48 Step
almond37 [142]

Answer:

Step 4 : he should have divided both sides by negative seven

Step-by-step explanation:

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Which one is true about the diagram?
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