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2 years ago

100 pts!!!! PLEASE HELP!!!!!

Mathematics

2 answers:

nevsk [136]2 years ago

6 0

he's right technichly <--- is spelled wrong

natka813 [3]2 years ago

5 0

Answer:

1)3/4

2)3

3)12 MILES

4)2.5 pounds

5)5/8 pounds

am not sure but hopefully it helps you!!!!!!

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The prior probabilities for events A1 and A2 are P(A1) = 0.30 and P(A2) = 0.55. It is also known that P(A1 ∩ A2) = 0. Suppose P(

k0ka [10]

We're given the following probabilities:

$P(A_1)=0.30$

$P(A_2)=0.55$

$P(A_1\cap A_2)=0$

$P(B\mid A_1)=0.20$

$P(B\mid A_2)=0.05$

(a) Yes, $A_1$ and $A_2$ are mutually exclusive. This is exactly what zero probability of their intersection means. The two events cannot occur simultaneously.

(b) Use the definition of conditional probability to expand:

$P(A_1\cap B)=P(A_1)P(B\mid A_1)=0.30\cdot0.20=0.06$

$P(A_2\cap B)=P(A_2)P(B\mid A_2)=0.55\cdot0.05=0.0275$

$P(B)=P(A_1\cap B)+P(A_2\cap B)=0.06+0.0275=0.0875$

(d) Bayes' theorem says

$P(A_1\mid B)=\dfrac{P(A_1)P(B\mid A_1)}{P(B)}=\dfrac{0.30\cdot0.20}{0.0875}\approx0.686$

$P(A_2\mid B)=\dfrac{P(A_2)P(B\mid A_2)}{P(B)}=\dfrac{0.55\cdot0.05}{0.0875}\approx0.314$

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2 years ago

SOLVE IT SO MANY POINT<br><br> 3(7x+ 1) = 21

IrinaK [193]

<span>3(7x+ 1) = 21
21x + 3 = 21
21x = 18
x = 6/7

hope this helps!</span>

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2 years ago

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Kobotan [32]

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Greatest common factor for 17 and 42

Musya8 [376]

Since 17 isnt a factor of 42 the only factor is 1

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