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Ainat [17]
3 years ago
7

Please help it due tomorrow and I don't know what to do :)

Mathematics
1 answer:
Anon25 [30]3 years ago
5 0

Answer:

The answer is 4.

Step-by-step explanation:

100 x -5to the second power which is 25 so 100/25 which is 4.

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Ask Your Teacher Consider a binomial random variable with n = 5 and p = 0.8. Let x be the number of successes in the sample. Eva
Readme [11.4K]

Answer:

0.942 is the required probability.  

Step-by-step explanation:

We are given the following in the question:

x is a binomial random variable with n = 5 and p = 0.8.

Then,

P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}

where n is the total number of observations, x is the number of success, p is the probability of success.

We have to evaluate:

P(x \geq 3) = P(x = 3) + P(x = 4) +P(x=5)\\\\= \binom{5}{3}(0.8)^3(1-0.8)^2 +\binom{5}{4}(0.8)^4(1-0.8)^1 +\binom{5}{5}(0.8)^5(1-0.8)^0\\\\= 0.2048 +0.4096+0.3276=0.942

0.942 is the required probability.

4 0
4 years ago
24 students in a class took an algebra test. if 18 students passed, what percent passed.
tia_tia [17]

Answer:

75%

Step-by-step explanation:

18/24=0.75

8 0
3 years ago
Read 2 more answers
The diameter of a bacterium called Spiral is 0.000015 meter. What is this
enyata [817]

Hey there!

When we put a number in scientific notation, we want the first number to be at least 1 and less than 10. There must be a digit from 1-9 in the ones place.

With the number 0.000015, we can move the decimal place 5 places to the right and we have 1.5, which is more than one and less than ten.

Because we moved the decimal place 5 places to the right, 1.5 is multiplied by 10 to the power of -5.

The 5 is the number of places the decimal is moved, and the negative sign is because we moved it to the right.

10^(-5) is the same as 0.00001, just for context.

So, 0.000015 meters in scientific notation is 1.5 x 10^(5) meters.

Hope this helps!

5 0
3 years ago
Cynthia's uncle told her to save 20% of her earnings
WARRIOR [948]
Find 100/20 x 30
=150
4 0
3 years ago
What are two ratios that are equivalent to 3:11
Artist 52 [7]
Ratios that are equivalent to 3:11 are 6:22 and 9:33.

Hope this helps!
3 0
3 years ago
Read 2 more answers
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