2 years ago

Simplifying Rational Expressions

1 answer:

4 0

B^-2 / b^-3 = b^(-2-(-3) = b^1 = b

answer is d

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MrRissso [65]

Answer:

The probability of founding exactly one defective item in the sample is P=0.275.

The mean and variance of defective components in the sample are:

$\mu=0.375\\\\\sigma^2=0.347$

Step-by-step explanation:

In the case we have a lot with 3 defectives components, the proportion of defectives is:

$p=3/40=0.075$

a) The number of defectives components in the 5-components sample will follow a binomial distribution B(5,0.075).

The probability of having one defective in the sample is:

$P(k=5)=\binom{5}{1}p^1(1-p)^4=5*0.075*0.925^4=0.275$

b) The mean and variance of defective components in the sample is:

$\mu=np=5*0.075=0.375\\\\\sigma^2=npq=5*0.075*0.925=0.347$

The Chebyschev's inequality established:

$P(|X-\mu|\geq k\sigma)\leq \frac{1}{k^2}$

6 0

3 years ago

Soloha48 [4]

An easy way is to do this
the 2 numbers are -x and x+8 where x is an integer

we can generate lots of numbers this way

example
-1 and 9
-2 and 10

8 0

2 years ago

9966 [12]

Well when you multiply it would most likely be 180

5 0

2 years ago

Rashid [163]

I Think The Answer Is 140.

The Expression: 0.8x + x = 252 Can Explain The Answer If x = 140.
Or: 1.8 Times x = 252 If x = 140.

3 0

2 years ago

AysviL [449]

Answer:

20 are cows 10 chickens 20 times 4 is 80 10 times 2 equals 20 80+20=100

Step-by-step explanation:

6 0

3 years ago