Write 9 decimals with three decimal places that when rounded to the nearest hundredth round to 4.56
2 answers:
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Answer:
a) 0.2725
b) 0.7275
c) 0.8948
Step-by-step explanation:
This is a binomial distribution probability problem. The formula is:
Where
n is the number of trials [here we are taking 8 person, so n = 8]
x is what we are looking for [in the problem]
p is the probability of success [ 15%, so p = 0.15
q is the probability of failure [q = 1-p = 0.85]
Now,
a)
We are looking for "no one" did fling, so x = 0
Let's put into formula and find out the probability:
So, the probability that no one has done a one-time fling is 0.2725
b)
Atleast 1 person means P(x ≥ 1).
This can be found by:
P(x ≥ 1) = 1 - P(x=0) = 1 - 0.2725 = 0.7275
THus, Probability that at least one person has done a one-time fling is 0.7275
c)
No more than 2 people means P (x≤2).
This is essentially
P ( x ≤ 2 ) = P(x=0) + P(x=1) + P(x=2)
P ( x = 0 ) is found in part (a), which is 0.2725
P (x = 1 ) and P(x=2) can be found using formula:
and
Thus,
P ( x ≤ 2 ) = P(x=0) + P(x=1) + P(x=2) = 0.2725 + 0.3847 + 0.2376 = 0.8948
First of all, a meter is equal to 100cm.
Seb made a jump of two and a half meters. (
or 
)
Multiply 100 by 2.
Now we need the half.
What is half of 100?
50 is half of 100.
So, add 50 to the 200.
Kirsty's jump was 10 centimeters longer.
Add 10 centimeters to the 250 centimeters.
Kirsty's jump was 260 centimeters high, or 2.55 meters.
Seb made a jump of two and a half meters. (
Multiply 100 by 2.
Now we need the half.
What is half of 100?
50 is half of 100.
So, add 50 to the 200.
Kirsty's jump was 10 centimeters longer.
Add 10 centimeters to the 250 centimeters.
Kirsty's jump was 260 centimeters high, or 2.55 meters.