Mr. Flowers plants 10 rose bushes in a row. Eight of the bushes are white and two are red, and he plants them in random order. W
1 answer:
Answer:
0.13
Step-by-step explanation:
We give to each rose bush in the line a number, so there are the following n possibilities that Mr Flower swill consecutively plant seven or more white bushes, firs two are that the two red bushes to be in the first three bushes planted, that is, (1 and 2) or (1 and 3) or (2 and 3). Second subset of possibilities is those red bushes to be in the last three bushes planted, that is (8 and 9) or (8 and 10) or (9 and 10), then there are a total of 6 possible options. In order to calculate the probability we need to know how many combinations of 2 bushes we can form from the total 10 bushes, it is made through the binomial coefficient.
N of possibilities is= =45 factorial or combination formula
Number of possible events = 6
The probability is p==0.13
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Answer:
Probability that none of the 20 children in such a classroom would be unvaccinated is 0.055.
Step-by-step explanation:
We are given that a classroom of 20 children in one such area where 13.5% of children are unvaccinated.
If there are no siblings in the classroom, we are willing to consider the vaccination status of the 2020 unrelated children to be independent.
The above situation can be represented through binomial distribution;
where, n = number of trials (samples) taken = 20 children
r = number of success = none of the 20 children
p = probability of success which in our case is probability that
children are unvaccinated, i.e; p = 13.5%
<u><em>Let X = Number of children that are unvaccinated</em></u>
So, X ~ Binom(n = 20, p = 0.135)
Now, Probability that none of the 20 children in such a classroom would be unvaccinated is given by = P(X = 0)
P(X = 0) =
=
= 0.055
<em>Hence, the probability that none of the 20 children in such a classroom would be unvaccinated is 0.055.</em>
Answer:
option D
Brianna
Step-by-step explanation:
Given in the question the expression wrote by Mr.Walden
To write the simplified form of this expression we will use negative rule of exponent
= 1 /
so,
Only Brianna wrote right simplification of the expression written by Mr.Walden