All categories

3 years ago

A couple decided to have 4 children.

1 answer:

7 0

See below the theee of possibilities:

BBBB
BBBG
BBGB
BBGG
BGBB
BGBG
BGGB
BGGG
GBBB
GBBG
GBGB
GBGG
GGBB
GGBG
GGGB
GGGG

There are 16 differents possibilities.
In 11 of them have at least 2 boys

So probability is 11/16

You might be interested in

Explain why you don't have to do any computing to solve 15 × 0 × (13 + 7)

Fynjy0 [20]

Anything times 0 is 0 so the answer is 0

6 0

2 years ago

Read 2 more answers

Algebra hw. plz help

olasank [31]

it is 20 minuets that she went over on her bill

4 0

3 years ago

Read 2 more answers

Can somebody help me please??

Komok [63]

Answer:

A is the corrrect answer

Step-by-step explanation:

I have done this questiob befor4

3 0

3 years ago

Read 2 more answers

Write the equation of a line. parallel to 2x-3y=6 and passing through (-2,5)

Vlad [161]

3y = 2x - 6
y = 2/3x - 2

y = 2/3x + c , ( - 2, 5 )
5 = 2/3 ( -2 ) + c
3c = - 6
c = - 2
y = 2/3x - 2

i am a mathematics teacher. if anything to ask please pm me

6 0

3 years ago

The table shows the time a patient spends at the dentist and the amount of the bill.

erica [24]

<u>Answer-</u>

Correlation coefficient for the data in the table was found to be 0.93.

<u>Solution-</u>

Taking the independent variable or input variable as, the time a patient spends at the dentist and the dependent variable or output variable as the amount of the bill.

We know that,

$r=\frac{n(\sum xy)-\sum x \sum y}{\sqrt{[n\sum x^{2} -({\sum x})^{2}]\times [n\sum y^{2} -({\sum y})^{2}]}}$

Calculating the values from the table, then putting it in the formula

$r=\frac{4 \times 3130.9 \ - \ 6.45 \times 1473}{\sqrt{[4\times 12.3725 \ - \ 6.45^{2}][4 \times 877475 \ - \ 1473^2]}}$

$\Rightarrow r=0.929720561 \approx 0.93$

∴ Correlation coefficient for the data is 0.93.

3 0

3 years ago

Read 2 more answers