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Inga [223]
3 years ago
14

In a certain country, the true probability of a baby being a boy is 0.519. Among the next nine randomly selected births

Mathematics
1 answer:
yawa3891 [41]3 years ago
4 0

Answer:

0.9973

Step-by-step explanation:

Given :

Probability of girl, probability of success , 1 - p = 1 - 0.519 = 0.481

1 - p = 0.481

n = 9

Probability that atleast one is girl

Usingbthe binomial probability distribution :

P(x =x) = nCx * p^x * (1 - p)^(n - x)

USing the binomial probability calculator :

p(x ≥ 1) = p(x=1) + p(x=2) + p(x=3) + p(x=4) + p(x=5) + p(x=6) + p(x=7) + p(x=8) + p(x=9)

p(x ≥ 1) = 0.9973 ( from calculator).

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<img src="https://tex.z-dn.net/?f=solve%20for%20%22m%22%20t%3D%5Cfrac%7Bms%7D%7Bm%2Bn%7D" id="TexFormula1" title="solve for &quo
dalvyx [7]

Answer:

\boxed{\sf \ \ \ m = -\dfrac{tn}{t-s} \ \ \ }

Step-by-step explanation:

Hello,

let s assume that m+n is different from 0

we have this equation and we need to find m as a function of t, s, and n

t=\dfrac{ms}{m+n}

<=>

(m+n)*t=ms\\\\ tm+tn=sm\\ (t-s)m = -tn\\ m = -\dfrac{tn}{t-s}

for t-s different from 0, so t different from s

hope this helps

4 0
3 years ago
I need help please please
Aliun [14]

Answer:

y= -4/3x +8

Step-by-step explanation:

well first you got to simply for equation

4x +3y = 24

so you subtract 4x to both sides and that gives you : 3y= -4y +24

then you divide everything by 3

and that leaves you with : y= -4/3x +8

and the graph just put a dot on 8 on the y axis then go down -4 and left 3

your welcome!!!!!!!!1

7 0
2 years ago
BC<br> Round your answer to the nearest hundredth.<br> А<br> 50°<br> ?<br> 3<br> B
emmasim [6.3K]

Use the sine function.

sine = opposite side of triangle divided by the hypotenuse.

Here is the set up:

sin(50°) = BC/3

sin(50°)/3 = BC

Use your calculator to simply left side.

Take it from here.

6 0
2 years ago
Read 2 more answers
Select all ratios equivalent to 4:3.
valentina_108 [34]

Answer:

8:6 and 16:12

Step-by-step explanation:

5 0
3 years ago
Riley has 78 postcards she wants to put 6 on each poster board. How many poster boards will she need
nirvana33 [79]
13, because 78 postcards divided by 6 cards per board = 13 poster boards 
6 0
2 years ago
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