11. Find the sum 2 1/2 + 1 3/4=

Mathematics

1 answer:

Maksim231197 [3]2 years ago

7 0

Answer:

It should be 4.25.

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What is the answer ?

mina [271]

Answer:

1)x=15

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Step-by-step explanation:

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labwork [276]

$(a) P= \frac{A}{e^{rt}} 

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3 years ago

Help binomial distributions

Ymorist [56]

We have the formula to compute the probability of having exactly k successed over n trials, given a probability p of success (and implicitly a probability 1-p of failure), which is

$P(\text{k successed on n trials}) = \binom{n}{k}p^k(1-p)^{n-k}$

Now, the probability of at least 3 successes is the union of the following event: exactly three successes,exactly four successes and exactly five successes.

We can compute their probability and sum them: $\binom{5}{3}\left(\frac{3}{7}\right)^3\left(\frac{4}{7}\right)^2 + \binom{5}{4}\left(\frac{3}{7}\right)^4\left(\frac{4}{7}\right)^1 + \binom{5}{5}\left(\frac{3}{7}\right)^5 \approx 0.36788$

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3 years ago