3 years ago

Don't mind the work below number 14 but I can't figure #14 out?

Mathematics

2 answers:

NikAS [45]3 years ago

7 0

I can't really see the whole picture

Zarrin [17]3 years ago

5 0

Can you take more of a picture please

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A teacher has found that the probability that a student studies for a test is 0.610.61, and the probability that a student gets

Ann [662]

Answer with step-by-step explanation:

Let

A=Student studies for a test

B=Student gets good grade on a test

The probability that a student studies for a test=P(A)=0.61

The probability that a student gets a good grade on a test=P(B)=0.79

The probability that both occur= $P(A\cap B)=0.56$

a.We have to find the events are independent

We know that if two events A and B are independent then

$P(A)\cdot P(B)=P(A\cap B)$

$P(A)\cdot P(B)=0.61\times 0.79=0.4819$

$P(A\cap B)\neq P(A)\cdot P(B)$

Hence, given events are not independent.

b.We have to find $P(B/A)$

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

$P(B/A)=\frac{0.56}{0.61}=0.92$

c. We have to find $P(A/B)$

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

$P(A/B)=\frac{0.56}{0.79}=0.71$

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3 years ago

What is the mean of the values below{48,59,70,27,61}

hram777 [196]

Answer:

Step-by-step explanation:

Mean=Average

To find it, add al the numbers and divide by how many there are.

48+59+70+27+61=265

265/5=53

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3 years ago

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F(x) = (x + 5)(x + 6)

Alenkasestr [34]

Answer:(-5,0) , (-6,0)

Y= (0,30)

Step-by-step explanation:

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Answer:

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