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3 years ago

PLEASE ANSWER ASAP WILL MARK BRAINLIEST!!

2 answers:

6 0

The answer is C.

It’s C because if you add the marble back to the bag you have a 4:5 chance of adding the white marble again, hence giving you another white marble in the bag to pick

kozerog [31]3 years ago

4 0

Answer:

Step-by-step explanation:

answering so the other can get brainliest

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The mean life of a tire is 30,000 km. The standard deviation is 2000 km. 95% of all tires will have a life between___ km and ___

Llana [10]

Answer:Need more infromation

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3 years ago

Read 2 more answers

A diagnostic test for a disease is such that it (correctly) detects the disease in 90% of the individuals who actually have the

Ne4ueva [31]

Answer:

0.2177 = 21.77% conditional probability that she does, in fact, have the disease

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Test positive

Event B: Has the disease

Probability of a positive test:

90% of 3%(has the disease).

1 - 0.9 = 0.1 = 10% of 97%(does not have the disease). So

$P(A) = 0.90*0.03 + 0.1*0.97 = 0.124$

Intersection of A and B:

Positive test and has the disease, so 90% of 3%

$P(A \cap B) = 0.9*0.03 = 0.027$

What is the conditional probability that she does, in fact, have the disease

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.027}{0.124} = 0.2177$

0.2177 = 21.77% conditional probability that she does, in fact, have the disease

3 0

3 years ago

How can you use similar triangles to find a missing measurement?

Vlad1618 [11]

Answer:

By comparison of the sides.

Step-by-step explanation:

If triangles are similar, that means their angles are equal and sides are proportional.

If you already have a proportion of two corresponding sides between triangles, then use that proportion and set it equal to a side you already know the measurement to. Hopefully that side is corresponding to your missing measurement, and you can then solve it.

8 0

3 years ago

Find the complementary angle of the following <br>1)69°. 2)39°. 3)17°. 4)40°

Luden [163]

Answer:

1.)21°

2.)51°

3.)73°

4.)50°

Step-by-step explanation:

1.) 90° - 69°

= 21°

2.) 90° - 39°

= 51°

3.) 90° - 17°

= 73°

4.) 90° - 40°

= 50°

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3 years ago

On Friday, March 16, Mr. Post’s beginning checking balance is $80, and his account is credited for a deposit for $50. The same d

sp2606 [1]

Answer:

195

Step-by-step explanation:

IDK :(

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3 years ago