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yanalaym [24]
3 years ago
7

Suppose that events E and F are​ independent, ​P(E)equals=0.40.4​, and ​P(F)equals=0.90.9. What is the Upper P left parenthesis

Upper E and Upper F right parenthesisP(E and F)​?
Mathematics
1 answer:
Dominik [7]3 years ago
8 0

Answer:

The probability of E and F is 0.367236 ≅ 0.367

Step-by-step explanation:

* Lets study the meaning independent probability  

- Two events are independent if the result of the second event is not

  affected by the result of the first event

- If A and B are independent events, the probability of both events  

 is the product of the probabilities of the both events

- P (A and B) = P(A) · P(B)

* Lets solve the question  

- There are two events E and F

- E and F are independent

- P(E) = 0.404

- P(F) = 0.909

∵ Events E and F are independent

- To find P(E and F) find the product of P(E) and P(F)

∴ P (E and F) = P(E) · P(F)

∵ P(E) = 0.404

∵ P(F) = 0.909

∴ P(E and F) = (0.404) · (0.909) = 0.367236 ≅ 0.367

* The probability of E and F is 0.367236 ≅ 0.367

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MAVERICK [17]

Answer:

see below

Step-by-step explanation:

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BA = 12 units  (by counting)

DA  can be found by using the pythagorean theorem

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9^2 +12^2 = DA^2

81 +144 = DA^2

225 = DA ^2

Take the square root of each side

sqrt(225) = sqrt(DA^2)

15 = DA

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JK = 4 units  (by counting)

LK  can be found by using the pythagorean theorem

a^2 +b^2 = c^2

LJ^2 + JK^2 = LK ^2

3^2 +4^2 = LK^2

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25 = LK ^2

Take the square root of each side

sqrt(25) = sqrt(LK^2)

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Scale factor from BAD to JKL

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Divide each side by 5

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We multiply by 1/3 to go from the big to small

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3 years ago
The weights of cars passing over a bridge has a mean of 3550 lb and a standard deviation of 870 lb. Assume that the weights of t
elena-s [515]

Step-by-step explanation:

Note: Question does not indicate if probability required is for weight to exceed or below 3000 lbs.  So choose appropriate answer accordingly (near the end)

Using the usual notations and formulas,

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standard deviation, sigma = 870

Observed value, X = 3000

We calculate

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Answer:

Probability that a car randomly selected is less than 3000

= P(X<3000) = 0.2636 (to 4 decimals)

Probability that a car randomly selected is greater than 3000

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3 years ago
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mariarad [96]

Answer:

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Step-by-step explanation:

This can be determined using the break-even point in ounce formula as follows:

Break even point in ounce = Fixed cost / Contribution per ounce

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3 years ago
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Answer:

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Step-by-step explanation:

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the area of a rectangular city park is 25/54 square miles. The length of the park is 5/9 mile. What is the width, in miles, of t
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Area=Length×Width
Width=Area÷Length
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