1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Irina18 [472]
2 years ago
12

8. A company makes electronic components for TV's. 95% pass final inspection (and 5% fail and need to be fixed). 120 components

are inspected in one day. (10 points) b.What is the variance of the number that pass inspection in one day
Mathematics
1 answer:
Taya2010 [7]2 years ago
3 0

Using the binomial distribution, it is found that the variance of the number that pass inspection in one day is 5.7.

For each component, there are only two possible outcomes, either it passes inspection, or it does not. The probability of a component passing inspections is independent of any other component, hence, the binomial distribution is used to solve this question.

Binomial probability distribution

Probability of <u>exactly x successes on n repeated trials, with p probability</u>, and has variance given by:

V(X) = np(1 - p)

In this problem:

  • 95% pass final inspection, hence p = 0.95
  • 120 components are inspected in one day, hence n = 120.

The variance is given by:

V(X) = np(1 - p) = 120(0.95)(0.05) = 5.7

The variance of the number that pass inspection in one day is 5.7.

To learn more about the binomial distribution, you can take a look at brainly.com/question/24863377

You might be interested in
Mnknkknnjkhbjhbkjdesjhajkd1qwbbbbbbbbhbxbhsjhbwqbhzhbwbqbwbhhwqbbhjsqbhswbhhbs
love history [14]

Answer:

mood

Step-by-step explanation:

6 0
3 years ago
Evaluate 4(x - 3) + 5x - x^2 for x = 3 <br>A. 2 <br>B. -6 <br>C. 6<br>D. -2​
ipn [44]

Answer:

C) x=6...

Step-by-step explanation:

hope this helps...

3 0
2 years ago
Suppose a car has a rating of 4.8 gallons per 100 miles. What is the miles-per-gallon rating of this car? 
bezimeni [28]

Answer:

The miles-per-gallon rating of this car is 20.83.

Step-by-step explanation:

This question can be solved by a rule of three.

What is the miles-per-gallon rating of this car?

How many miles for 1 gallon?

4.8 gallons are used for 100 miles. So

4.8 gallons - 100 miles

1 gallon - x miles

4.8x = 100

x = \frac{100}{4.8}

x = 20.83

The miles-per-gallon rating of this car is 20.83.

4 0
2 years ago
12 people can be of 30 chairs in eight hours how many chairs candy people build in 100 hours
ruslelena [56]
Hello!

Divide the amount of chairs (30) that 12 people can build by the number of hours (8) it takes to build them, to find out how many chairs they make per hour.

30 ÷ 8 = 3.75

This means that they make they make 3.75 chairs per hour. Multiply this by 100 hours.

3.75 × 100 = 375

ANSWER:

The people can build D. 375 chairs in 100 hours.
7 0
3 years ago
I have just one question, could someone please answer it?? (see linked file)
Annette [7]

The solution is x=1 and y=-2

Further explanation:

Given equations are:

\frac{7}{2}x-\frac{1}{2}y=\frac{9}{2}\\3x-y=5

Multiplying equation no. 1 with 2 will give us:

7x-y=9       Eqn 3

From equation no 2:

3x-y=5\\-y=5-3x\\y=3x-5

Putting the value of y in eqn 3

7x-(3x-5)=9\\7x-3x+5=9\\4x=9-5\\4x=4\\\frac{4x}{4}=\frac{4}{4}\\x=1\\Putting\ x=1\ in\ equation\ 2\\3(1)-y=5\\3-y=5\\-y=5-3\\-y=2\\y=-2\\

The solution is x=1 and y=-2

Keywords: Linear equations, Solution set

Learn more about linear equations at:

  • brainly.com/question/561665
  • brainly.com/question/537998

#LearnwithBrainly

8 0
3 years ago
Other questions:
  • Any suggestions of what they think this might be ?
    14·1 answer
  • Consider the original rectangle and the rectangle that has been reduced by 0.5.
    11·1 answer
  • Find one positive angle whose sine is negative 0.70.
    13·1 answer
  • Mick has a 6-digit code. He remembers it as three 2-digit numbers. The first number is between 10 and 20. The second number is 3
    5·1 answer
  • Harry the hippo is munching on the lily pads in his pond. When he arrived at the pond, there were 20 lily pads, but he is eating
    6·1 answer
  • Which data set could be represented by the box plot shown below 1,3,6,8,10,12,13,16,18,20
    15·1 answer
  • Explain the steps needed to find the area of a triangle AND a trapezoid.
    8·1 answer
  • BRAINLY if correct
    15·2 answers
  • Need help asap with math question! Thx
    13·1 answer
  • Please help with distributive property
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!