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Julli [10]
3 years ago
12

A recent study found that 81?% of? breast-cancer cases are detectable by mammogram. Suppose a random sample of 11 women with bre

ast cancer are given mammograms. Find the probability that all of the cases are? detectable, assuming that detection in the cases is independent.
Mathematics
1 answer:
elena-s [515]3 years ago
7 0

Answer:

9.847 %

Step-by-step explanation:

Be p1 the probability that the mammogram detect breast cancer in a woman.

p1=81%.

The probability 'P' that independent and consecutive 'n' singular events with p probability occur is:

P=p_{1} ^{n}

In this case:

P: Probability that breast cancer be detected on 11 women with breast cancer.

P=0.81^{11}=0.09848

P=9.847 %

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2 years ago
Elio makes candles that are 14 cm tall. Each candle burns 8 hours before going out. He is wondering how many hours a 21 cm tall
MAXImum [283]
Elio is right in assuming the relationship between the height and the hours it burns is proportional.

Find the unit rate

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You can set this up as an algebraic equation to check the answer.

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Hope this helped you! :)
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2 years ago
How many equivalence relations are there on the set 1, 2, 3]?
Alex787 [66]

Answer:

We need to find how many number of equivalence relations are on the set {1,2,3}

A relation is an equivalence relation if it is reflexive, transitive and symmetric.

equivalence relation R on {1,2,3}

1.For reflexive, it must contain (1,1),(2,2),(3,3)

2.For transitive, it must satisfy: if (x,y)∈R then (y,x)∈R

3. For symmetric, it must satisfy: if (x,y)∈R,(y,z)∈R then (x,z)∈R

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we can have three possible equivalence relations:

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3 years ago
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Step-by-step explanation:

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I hope im right!!!

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