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Llana [10]
3 years ago
11

Children gender. a certain couple is equally likely to have either a boy child or a girl child. if the family has four children,

let x denote the number of girls.
a. identify the possible values of the random variable x.
b. determine the probability distribution of x. (hint: there are 16 possible equally-likely outcomes. one is gbbb, meaning the first born is a girl and the next three born are boys.
use random-variable notation to represent each of the following events. also use the special addition rule and the probability distribution obtained in part (b to determine each event’s probability. the couple has
c. exactly two girls.
d. at least two girls.
e. at most two girls.
f. between one and three girls, inclusive.
g. children all of the same gender.
Mathematics
1 answer:
rusak2 [61]3 years ago
6 0
D. at least two girls
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You use lots and lots of math.

5 0
3 years ago
camelback mountain has an elevation change of 1,264 feet. how many pennies would it take to make a stack that high? pls show all
tatiyna

1 penny = 0.005 ft
total amt of pennies = 1264/0.005 = 252800 pennies

8 0
2 years ago
A boxer is put on a diet to gain 20 lb in four weeks. The boxer gains 4 1/3 lb the first week and 5 5/6 lb the second week. How
V125BC [204]

Answer:

9.8 lbs

Step-by-step explanation:

4 1/3 + 5 5/6= 10 1/6

20 - 10 1/6 = 9.8

7 0
3 years ago
Finally, the arena decides to offer advertising space on the jerseys of the arena’s own amateur volley ball team. The arena want
bagirrra123 [75]

Answer: 7/50

14%

1/30

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0.14 to %= 0.14 ×100=14%

Total number of balls=6

Blue balls=2

Golden balls=2

Green balls=2

Probability of picking the first ball=1/6

Probability of picking the second ball= 1/5

P(winning wit 2 golden balls)=1/6×1/5=1/30

6 0
2 years ago
You buy Apple stock for $120 per share over a period of time the stock value increased at a weekly rate of 5% you sell the stock
Rainbow [258]

Answer:

8.31  weeks

Step-by-step explanation:

Given that the cost of one share of Apple stock, C=$120

Rate is the increment of the stock value, R= 5%/week=0.05 / week.

Assuming that after t week, the stock has been sold for $180.

Since the stock value increased at 5% every week, so, the interest is compounded weekly, so

S=C\left(1+R\right)^t \\\\ \Rightarrow 180 = 120\left(1+0.05\right)^t \\\\  \Rightarrow 180 = 120\left(1.05 )^t \\\\

\Rightarrow \frac{180}{120}=1.05^t \\\\\Rightarrow 1.5=1.05^t

\Rightarrow \ln(1.5)=t \ln(1.05) [taking log both sides]

\Rightarrow t=\frac {\ln(1.5)}{\ln(1.05)}=8.31 weeks

Hence, after 8.31  weeks the stock has been sold for $180.

6 0
3 years ago
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