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2 years ago

−2/3(3 - 1/2)(-1) = ?

Mathematics

1 answer:

chubhunter [2.5K]2 years ago

8 0

The correct answer would be <u><em>B. 2 - 1/3</em></u>

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In a semiconductor manufacturing process, three wafers from a lot are tested. Each wafer is classified as pass or fail. Assume t

Angelina_Jolie [31]

Answer:

$P(X = 0) = 0.027$

$P(X = 1) = 0.189$

$P(X = 2) = 0.441$

$P(X = 3)= 0.343$

Step-by-step explanation:

The probability mass function P(X = x) is the probability that X happens x times.

When n trials happen, for each $x \leq n$ , the probability mass function is given by:

$P(X = x) = pe_{n,x}.p^{x}.(1-p)^{n-x}$

In which p is the probability that the event happens.

$pe_{n,x},$ is the permutation of n elements with x repetitions(when there are multiple events happening(like one passes and two not passing)). It can be calculated by the following formula:

$pe_{n,x} = \frac{n!}{x!}$

The sum of all P(X=x) must be 1.

In this problem

We have 3 trials, so $n = 3$

The probability that a wafer pass a test is 0.7, so $p = 0.7$

Determine the probability mass function of the number of wafers from a lot that pass the test.

$P(X = 0) = (0.7)^{0}.(0.3)^{3} = 0.027$

$P(X = 1) = pe_{3,1}.(0.7).(0.3)^{2} = 0.189$

$P(X = 2) = pe_{3,2}.(0.7)^{2}.(0.3) = 0.441$

$P(X = 3) = (0.7)^{3} = 0.343$

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Angle UZT is congruent to angle

ss7ja [257]

There is not enough information

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3 years ago

write the ratio as a fraction in simplest form, with whole numbers with a numerator and a denominator 16 g to 40 g

kobusy [5.1K]

16:40 as a fraction is 16/40. 16/40 is 4/10 simplified

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2 years ago

Read 2 more answers

Is 3/2 equivalent to 1/9

aliya0001 [1]

Answer:

Step-by-step explanation:

3/2 is 1.5

1/9 is 0.111

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2 years ago

Randy mother decided he can make his flower bed quite so large

EleoNora [17]

Is this a error fixing in English? If so it is: Randy's mother decided she can make her flower bed quite so large. If not.. add the math problem with a picture or screenshot! Use the paperclip button to add it!!
Yw,
~Savvu

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2 years ago