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tatuchka [14]
3 years ago
6

I’ll mark brainliest!! Please help:)

Mathematics
1 answer:
KIM [24]3 years ago
6 0

Answer:

E

Step-by-step explanation:

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If f(x) = 2x2 + 2 and g(x) = x2 - 1, find (f - g)(x)I
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  C. x^2 + 3

Step-by-step explanation:

Substitute for f(x) and g(x) and simplify.

  (f -g)(x) = f(x) -g(x)

  (f -g)(x) = (2x^2 +2) -(x^2 -1) = 2x^2 +2 -x^2 +1

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A new medical test provides a false positive result for hepatitis 2% of the time that is a perfectly healthy subject being teste
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Given that X <span>be the number of subjects who test positive for the disease out of the 30 healthy subjects used for the test.

The probability of success, i.e. the probability that a healthy subject tests positive is given as 2% = 0.02


Part A:

</span><span>The probability that all 30 subjects will appropriately test as not being infected, that is the probability that none of the healthy subjects will test positive is given by:

</span>P(X)={ ^nC_xp^x(1-p)^{n-x}} \\  \\ P(0)={ ^{30}C_0(0.02)^0(1-0.02)^{30-0}} \\  \\ =1(1)(0.98)^{30}=0.5455
<span>

Part B:

The mean of a binomial distribution is given by

</span>\mu=np \\  \\ =30(0.02) \\  \\ =0.6
<span>
The standard deviation is given by:

</span>\sigma=\sqrt{np(1-p)} \\ \\ =\sqrt{30(0.02)(1-0.02)} \\ \\ =\sqrt{30(0.02)(0.98)}=\sqrt{0.588} \\  \\ =0.7668
<span>

Part C:

This test will not be a trusted test in the field of medicine as it has a standard deviation higher than the mean. The testing method will not be consistent in determining the infection of hepatitis.</span>
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Step-by-step explanation:

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If you have 3 pieces of bread and you feed your black slave 1 bread for all 5 of them so they can be alive how many pieces of br
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Answer:

,,

Step-by-step explanation:

,,

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