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Amanda [17]
2 years ago
13

Two production lines produce the same parts per week of which 100 are defective. Line 2 produces 2,000 parts per week of which 1

50 are defective. If you choose a part randomly from the stock what is the probability it is defective? If it is defective what is the probability it part. Line 1produces 1,000 produced by line 1?
Mathematics
1 answer:
Vikentia [17]2 years ago
5 0

Answer:

(a) 0.0833 or 8.33%

(b) 0.40 or 40%

Step-by-step explanation:

Parts line one (n1) = 1,000 parts

Defects line one (d1) = 100 parts

Parts line two (n2) = 2,000 parts

Defects line two (d2) = 150 parts

Total number of parts (n) = 3,000 parts

a. Probability of a randomly selected part being defective:

P(d) = \frac{d_1+d_2}{n_1+n_2}=\frac{100+150}{1,000+2,000}\\P(d) =0.0833=8.33\%

The probability is 0.0833 or 8.33%

b. Probability of a part being produced by line one, given that it is defective:

P(1|d)=\frac{P(1\cap d)}{P(1\cap d)+P(2\cap d)}\\P(1|d)=\frac{\frac{100}{3,000} }{\frac{100}{3,000}+\frac{150}{3,000}}\\P(1|d)=0.4 = 40\%

The probability is 0.40 or 40%.

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BlackZzzverrR [31]

Answer: The correct statements are

The GCF of the coefficients is correct.

The variable c is not common to all terms, so a power of c should not have been factored out.

David applied the distributive property.

Step-by-step explanation:

GCF = Greatest common factor

1) GCF of coefficients : (80,32,48)

80 = 2 × 2 × 2 × 2 × 5

32 = 2 × 2 × 2 × 2 × 2

48 = 2 × 2 × 2 × 2 × 3

GCF of coefficients : (80,32,48) is 16.

2) GCF of variables :(b^4,b^2,b^4)

b^4= b × b × b × b

b^2 = b × b

b^4 =b × b × b × b

GCF of variables :(b^4,b^2,b^4) is b^2

3) GCF of c^3 and c: c is not the GCF of the polynomial. The variable c is not common to all terms, so a power of c should not have been factored out.

4) 80b^4-32b^2c^3+48b^4c

=16b^2(5b^2-2c^3+3b^2c)

David applied the distributive property.

7 0
2 years ago
Read 3 more answers
g The completion times for a job task range from 11.8 minutes to 19.4 minutes and are thought to be uniformly distributed. What
nevsk [136]

Answer: 0.5263

Step-by-step explanation:

Given : The completion times for a job task range from 11.8 minutes to 19.4 minutes .

The density function for uniform distribution function for interval [a,b] :-

f(x)=\dfrac{1}{b-a}

Then the density function for the given situation:-

f(x)=\dfrac{1}{19.4-11.8}=\dfrac{1}{7.6}

The required interval : 16.8-12.8=4

Now, the probability that it will require between 12.8 and 16.8 minutes to perform the task will be :-

\dfrac{4}{7.6}=0.526315789474\approx0.5263

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2 years ago
Information was collected on those who attended the opening of a new movie. The analysis found that 56 percent of the moviegoers
kherson [118]

Answer: 0.65

Step-by-step explanation:

Let A denote that moviegoers were female and B denotes that moviegoers were under age 25.

As per given we have,

P(A)=0.56     P(B)=0.26     P(A∩B)=0.17

Using formula ,

P(A\cup B)=P(A)+P(B)-P(A\cap B)\\\\ P(A\cup B)=0.56+0.26-0.17=0.65

Hence, the probability that a moviegoer is either female or under age 25 = 0.65

6 0
2 years ago
A washer contains a drum that spins at 750 revolutions per minute. To the nearest hundredth, the angular velocity of the drum is
LenaWriter [7]
For this case, the first thing we must do is to take into account the following transformation of units:
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 1 minute = 60 seconds
 Applying the transformation of units we have:
 (750) * (1/60) * (2 * pi) = 78.54 rad / sec

 Answer:
 
To the nearest hundredth, the angular velocity of the drum is 78.54 radians per second.
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2 years ago
List at least three (3) characteristics of carbon that make it a unique element.
lutik1710 [3]
1.) Carbon Compounds are the backbone of all organic compounds that are the basic building blocks of all living things.

2.) The diamond allotropic form of carbon is the hardest substance known. 

3.) Carbon has the ability to form covalent bonds with other carbon atoms forming continuous chains, branches, and loops 
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2 years ago
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