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2 years ago

I’ll give who ever 55 points just help plz

Mathematics

1 answer:

svp [43]2 years ago

5 0

Answer:

it should be 3.0

Step-by-step explanation:

I hope this helps:) :)

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Ymorist [56]

The answer is C. 65........

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4 years ago

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An article in Knee Surgery, Sports Traumatology, Arthroscopy, "Arthroscopic meniscal repair with an absorbable screw: results an

igomit [66]

Answer:

Mean = 1.57

Variance=0.31

Step-by-step explanation:

To calculate the mean and the variance of the number of successful surgeries (X), we first have to enumerate the possible outcomes:

1) Both surgeries are successful (X=2).

$P(e_1)=0.90*0.67=0.603$

2) Left knee unsuccessful and right knee successful (X=1).

$P(e_2)=(1-0.9)*0.67=0.1*0.67=0.067$

3) Right knee unsuccessful and left knee successful (X=1).

$P(e_3)=0.90*(1-0.67)=0.9*0.33=0.297$

4) Both surgeries are unsuccessful (X=0).

$P(e_4)=(1-0.90)*(1-0.67)=0.1*0.33=0.033$

Then, the mean can be calculated as the expected value:

$M=\sum p_iX_i=0.603*2+0.067*1+0.297*1+0.033*0\\\\M=1.206+0.067+0.297+0\\\\M=1.57$

The variance can be calculated as:

$V=\sum p_i(X_i-\bar{X})^2\\\\V=0.603(2-1.57)^2+(0.067+0.297)*(1-1.57)^2+0.033*(0-1.57)^2\\\\V=0.603*0.1849+0.364*0.3249+0.033*2.4649\\\\V=0.1115+0.1183+0.0813\\\\V=0.3111$

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4 years ago

Does anyone know how too simplify 4(1-2b)+7b-10?

tekilochka [14]

Answer:

-1b-6

Step-by-step explanation:

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3 years ago

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KiRa [710]

Answer:

2,16 16,2

Step-by-step explanation:

probally wrong

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3 years ago

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13 is 26% of what number

Marina CMI [18]

Answer:

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3 years ago

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