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
Alborosie
1 year ago
15

Endure all, a manufacturer of batteries claims that the lifetime of their batteries is normally distributed with a mean of 500 h

ours and a standard deviation of 40 hours. What is the probability that an endure all battery selected at random will last more than 550 hours?.
Mathematics
1 answer:
ycow [4]1 year ago
7 0

Based on the z-score, an Endure All battery selected at random has a 10.56% chance of lasting more than 550 hours.

<h3>What are z-scores?</h3>

How closely a value relates to the mean of a set of values is expressed by a Z-score.

The Z-score is created using standard deviations from the mean.

A data point's total value is equal to the mean value when the Z-score of the data point is equal to 0.

So, in order to determine how far the raw score deviates from the mean, the Z score is used.

The following steps are used to determine the Z score:

z = (x - μ)/σ

We know that:  x > 550 and μ = 500, σ = 40

z = 550 - 500 / 40

z = 1.25

The graph of the normal distribution indicates:

P(z > 1.25) = 1 - P(z < 1.25)

P(z > 1.25) = 1 - 0.8944

P(z > 1.25) = 0.1056

Therefore, based on the z-score, an Endure All battery selected at random has a 10.56% chance of lasting more than 550 hours.

Know more about the z-scores here:

brainly.com/question/25638875

#SPJ4

You might be interested in
Which of these relations is a function?<br> I’m I correct??
Vlad1618 [11]

Answer:

the first one on the bottom

Step-by-step explanation:

There is a little trick to find out if it is a function or not. This trick is called the vertical line test. if you can scan the figure with a virtual line and it does not touch more than one side of the figure at one time then it is a function. if it touches more than one side or line of the figure it is not a function.

3 0
2 years ago
Which of these situations can be modeled by an exponential function?
Gwar [14]

Answer:

B) A herd of lions whose numbers triple every decade.

Step-by-step explanation:

Situations that can be modeled by exponential functions:

A situation can be modeled by exponential functions when the change is a multiplication or a division, not a sum or subtractions.

In this question:

In option A, C and D the measures are a sum or subtractions, as the rate of change is always the same. So it rests option B as the answer, as tripling is multiplying by 3.

6 0
2 years ago
In the figure below, B is the center of the circle, NL
Black_prince [1.1K]

Answer: x=12

Step-by-step explanation:

OQ is equal to NL since both contain 90 degree angles and are intersected by a radius. Since OS is 3x-2 and NL is 32, then we need to find OQ and set it equal to NL. OS is half of OQ, so multiplying OS by 2 will get you OQ. 6x-4=32

That yields x=12.

8 0
3 years ago
Read 2 more answers
Can someone please help me with both of these questions. Thanks so much.
adell [148]
(1.) Part A
The Yellow Chalk because when you turn 2/6 into a new fraction (double it) its 4/12 and 4/12 is bigger than 3/12.

(2.) Part B
It's true because 5/12 is less than half of the bucket because the other half is 7/12

8 0
3 years ago
Read 2 more answers
You used 13 gallons when u traveled 342 miles. How many miles did u travel per gallon?
choli [55]

Answer:26.3 miles

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • Solve the quadratic equation for x. What is the product when the roots are multiplied? (x + 2)2 = 1
    10·2 answers
  • Use estimation to help you choose the correct answer.<br><br> 0.945 x 7.6 =
    9·1 answer
  • The answer i don't understand ​
    11·2 answers
  • When Mr. Gree bought a used car he made a
    12·1 answer
  • PLEASE HELP ME!
    10·2 answers
  • What is the Anwser if a divide 33 into 2 groups so the ratio is 4 to 7
    11·1 answer
  • Hellppppp plz<br> i will mark you brill
    11·1 answer
  • Matt drank 2.5 bottles of water yesterday. Each bottle contained 1.5 liters of water. What was the number of liters of water Mat
    5·1 answer
  • Calculate the whole for each of the following
    9·1 answer
  • What is the ratio of circles to total shapes
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!