2 years ago

What is the estimate of 33,497 divided by 182

Mathematics

2 answers:

irina [24]2 years ago

7 0

One way to estimate the quotient is to round the numbers to the nearest tens. 33500/180 is about 186.

Molodets [167]2 years ago

6 0

The each awnser will be

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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).

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

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

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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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