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spin [16.1K]
2 years ago
11

A procedure has an 81% success rate. The procedure is tried on 12 patients what is the probability that at least 8 patients show

improvement
Mathematics
1 answer:
Nesterboy [21]2 years ago
8 0

The probability that at least 8 patients show improvement is; 0.94

<h3>How to use Binomial Probability Distribution?</h3>

The formula for Binomial Probability Distribution is;

P(X = r) = nCr * p^(r) * (1 - p)^(n - r)

where;

n = number of trials

r = number of specific events you wish to obtain

p is  probability of success

From the question, we have;

n = 12

r = 8

p = 81% = 0.81

The probability that at least 8 patients show improvement is expressed as;

P(X ≥ 8) = P(X = 8) + P(X = 9) + P(X = 10) + P(X = 11) + P(X = 12)

Using online binomial probability calculator gives us;

P(X ≥ 8) = 0.11954 + 0.22649 + 0.28967 + 0.22453 + 0.07977

P(X ≥ 8) = 0.94

Read more about Binomial Probability Distribution at; brainly.com/question/15246027

#SPJ1

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Step-by-step explanation:

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Jacqueline reach the end of the trail in two hours and 15 minutes. Write the amount of hours he spent on the trail as a mixed nu
LenaWriter [7]
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3 years ago
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andre [41]

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3 0
3 years ago
Anne-marienhas saved 9 dollars for a new coat that is 1/6 as much money as she needs how much does the coat cost
Tatiana [17]

Answer:

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Step-by-step explanation:

Given:

She saved = $ 9

To Find:

Cost of the coat = ?

Solution:

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and according to given condition it is 1/6 of the total money she needs for buying coat

by this we have

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As x is the amount she needs

so

Cost of the coat = $54


7 0
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