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grandymaker [24]
3 years ago
9

Why do you invert your tubes after performing a venipuncture?

Health
2 answers:
Aloiza [94]3 years ago
8 0

Answer:

The anticoagulant in the tube keeps the blood from clotting, so the specimen still has the clotting factors and fibrinogen

Explanation:

frozen [14]3 years ago
4 0
After the tube has been filled with blood, immediately invert the tube 8-10 times to mix and ensure adequate anticoagulation of the specimen.To avoid RBC shrinkage due to excess EDTA (with resulting changes in HCT and RBC indices values) and possible dilutional effect, the tubes should be filled with the proper
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A pharmacist receives a shipment of 22 bottles of a drug and has 4 of the bottles tested. If 6 of the 22 bottles are contaminate
romanna [79]

Explanation:

A hypergeometric distribution as a function of statistical distribution where members from two groups are analysed,  without replacing those members. Unlike binomial distributions, in which the probability remains the same for each trial, in hypergeometric distributions, these members are not replaced- each trial's probability affects the probability within next trial.

This is used in the process of random sampling and as a means of quality control in statistics; for example selecting members of a sports team from a mixed population of boys and girls.

Hypergeometric Formula..,

For a population consisting of N items, k are successes. And a random sample from that population consisting of n items, x of which are successes.

∴ hypergeometric probability is:

h(x; N, n, k) = [ kCx ] [ N-kCn-x ] / [ NCn ]

this distribution always has... 

  • its mean=  n * k / N .
  • its variance  is n * k * ( N - k ) * ( N - n ) /  [ N2 * ( N - 1 ) ] .

Thus….

Total number of bottles =  22

Number of contaminated bottles = 6

Number of tested bottles = 4

X= a random variable representing the number of contaminated bottles selected for the test.

N = 22

K = 6

n = 4

The probability mass function, f(x), is given by...

P(X=x)) = [ kCx] [ N-kCn-x ] / [ NCn ]    x= 0,1,2,3,...,n

           = \frac{[6 C 1] [22-6 C 4-1]}{[22 C 4]}

OR          

\frac{C\left \ {{k=6} \atop {x=1}} \right.   C\left \ {{22-6} \atop {4-1}} \right. }{C \left \ {22} \atop {4}} \right. }

Cxk= C14= 4!(1!(4 - 1)!)^{-1}= 24(6)^{-1}= 4\\Cn-xN-k=C\left \ {{22-6} \atop {4-1}} \right. } =16!(4!(16-4)!)^{-1}\\(CnN)^{-1}=(C \left \ {{y=22} \atop {x=6}} \right. ) ^{-1}=[22!(6!(22-6)!)^{-1}]^{-1}

f(x)= p= P(X=1)=0.45933014354067

P(that more than 1 of the tested bottles is contaminated);

P(X>1)=1−P(X≤1)=1−(P(X=0)+P(X=2))

                P(X>1)=0.291866028708134

Probability that one is contaminated: 0.4593(4 dec places)

Probability that more than one is contaminated: 0.2919 (4 dec places)

Learn more about calculating probability at brainly.com/question/4021035

Learn more about calculating event probability at brainly.com/question/6649771

#LearnWithBrainly

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Shara tells her friend that she wants to take diet pills. Which fact might shara’s friend provide to change her mind?
lora16 [44]
That she most first check with her doctor. and start eating healthy
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Solve 1/5 = t/3 for t​
zvonat [6]

Answer:

1/5 = t/3

*3      *3

3/5 = t

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Personal space can negatively effect communication by either distancing yourself or in a relationships case cause unresolved conflicts
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In the United States most of the illegal trafficking in body parts centers on the illegal removal of organs by:
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organized crime  broski. they sell them on the deep web or black markets


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