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klemol [59]
3 years ago
8

PLS HELP WILL GIVE BRAINIEST! You are flying in an airplane that has 2 engines. The engines individually have a success rate of

99%. What is the probability that both engines fail.
Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
4 0

Answer:

.01%*

Step-by-step explanation:

Individually, they both have a rate of failure of 1%.

.01 x .01 = .0001

Therefore they have a combined probability of failure of .01%

*Disclaimer!!

I am not the best at this area in math so I would still reference against someone else's answer, but this is my best effort :)

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If there are 19 questions and each question has 4 answers, what is the probability she will answer at least one question correct
gregori [183]

Answer:

0.9958

Step-by-step explanation:

P(being correct) = 1/4 = 0.25

Hence, p = 0.25

n = 19

P(x ≥ 1) = p(x = 1) + p(x = 2) +... + p(x = 19)

Using the binomial probability formula :

P(x =x) = nCx * p^x * (1 - p)^(n - x)

However, to save computation time, we could use a calculator :

Using a calculator,

P(x ≥ 1) = 0.99577

P(x ≥ 1) = 0.9958

7 0
2 years ago
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VARVARA [1.3K]
1 (B), because 3+-2=1, and 5+-4=1, which amounts to 1/1, or whole number 1.
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3 years ago
A group of students held a fundraiser last year and raised $950 for charity. this year, they raised $1,045. what is the percent
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% change = (new value - old value)/old valu x 100 = (1,045 - 950)/950 x 100 = 95/950 x 100 = 0.1 x 100 = 10%
6 0
3 years ago
Read 2 more answers
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Goryan [66]

Answer:

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Step-by-step explanation:

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If relevant information yet another category independent variable, as well as another quantifiable variable of interest, has been obtained, are using a single-way ANOVA.

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