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stepladder [879]
3 years ago
5

(HELP!)

Mathematics
2 answers:
denis-greek [22]3 years ago
7 0

Let X be the random variable denoting the number of girls that are born. Then X has a binomial distribution on n=125 babies and probability of getting a girl p=0.5. The probability we want is

\mathbb P(X\ge60)=\displaystyle\sum_{x=60}^{125}\binom{125}x0.5^{125-x}0.5^x\approx0.704=70.4\%

PSYCHO15rus [73]3 years ago
6 0

Answer:

B. 70.4% (APEX)

Step-by-step explanation:

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At the school the ratio of boys to girls is 5:3 if there are 385 boys in the school, how many students are there altogether?
ser-zykov [4K]

Answer:

There are 616 total students

Step-by-step explanation:

boys : girls: total

5           3      5+3 = 8

There are 385 boys

385/5 = 77

Multiply each term by 77

boys : girls: total

5*77  3*77   8*77

385    539    616

There are 616 total students

6 0
3 years ago
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Every weekend Jill bikes 7.5 miles from home to the tennis court. His cousin Jun does the same thing. He bikes 80% as far as Jil
Fynjy0 [20]
80% of 7.5 is 6.
so if he travelled 80% further, it would be 7.5+6 which is
13.5
7 0
3 years ago
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Which of the following expressions has a value between 5 and 6.
Airida [17]
So listen to this logic
lets say you have 3 numbers, m,a,x where they are all positivie
m>a>x
therefor
m^2>a>2>x^2
if m and a and x are square roots, therefor we can reverse the square root
confusing sorry

square 5 and 6
5^2=25
6^2=36

the number betwe 25 and 36

that would be 32

answer is √32

goes like this
5^2<32<6^2
sqrt both sides
5<√32<6

answer is √32
8 0
3 years ago
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Identify whether each scenario would be represented by a continuous or discrete graph
serg [7]

Answer: Identify whether each scenario would be represented by a continuous or discrete graph

Step-by-step explanation:

4 0
3 years ago
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Is 6/8 equal to 75 percent
slega [8]
6/8 is equivalent to 3/4, and 3/4=.75, and .75/100=75 percent. So yes, it is.
8 0
3 years ago
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