1 year ago

Please help fast!!!!

1 answer:

7 0

I think it’s 3 not sure!

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Gnesinka [82]

Answer:

The probability that at least one of the 5 donors has Group O blood type is 0.9497.

Step-by-step explanation:

We can model this as a binomial random variable, with n=5 (the sample size) and p=0.45.

The probability that exactly k donors have Group O blood type in the sample can be written as:

$P(x=k) = \dbinom{n}{k} p^{k}(1-p)^{n-k}\\\\\\P(x=k) = \dbinom{5}{k} 0.45^{k} 0.55^{5-k}\\\\\\$

We have to calculate the probability P(x≥1). In this case it easy to substract from 1 the probabitity that x is exactly 0:

$P(X\geq1)=1-P(x=0)\\\\\\P(x=0) = \dbinom{5}{0} p^{0}(1-p)^{5}=0.55^5=0.0503\\\\\\P(x\geq1)=1-0.0503=0.9497$

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3 years ago

Archy [21]

Step-by-step explanation:

x^2n + 10x^n + 16

= (x^n)(x^n) + 10(x^n) + 16

= (x^n + 2)(x^n + 8).

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2 years ago

tigry1 [53]

Find the constant of proportionality

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2 years ago

Ray Of Light [21]

Answer:

not sure

Step-by-step explanation:

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2 years ago

tiny-mole [99]

Answer:

3dollars

Step-by-step explanation:

easy

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2 years ago