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
Evgen [1.6K]
3 years ago
9

A company has developed a new power cell and wants to estimate its average lifetime. A random sample of 650 power cells is teste

d and the average lifetime of this sample is found to be 315 hours. The 315 hours is the value of a:
Mathematics
1 answer:
ohaa [14]3 years ago
5 0

Answer:

The 315 hours is the value of a: statistic

Step-by-step explanation:

A random sample of 650 power cells is tested and the average lifetime of this sample is found to be 315 hours.

The 315 hours is the value of a: statistic

A statistic is defined as a characteristic of a sample. It is used to estimate the value of a population parameter.

Just like here where a random sample of 650 power cells were taken for a test. And 315 hours is an example of a statistic.

You might be interested in
Can someone help me with this question? (no links!)
tatyana61 [14]

Answer:

Angle 1 is 105 degrees

Step-by-step explanation:

180 - 75 = 105

so

Angle 1 is 105 degrees

Hope this helped! Have a nice day, and feel free to follow me on i/n/s/t/a (leo_g_rios)

-

7 0
3 years ago
Read 2 more answers
The equation y=ax^2 describes a parabola. If the value of a is positive, which way does the parabola open?
Ivenika [448]
<h3>Answer:</h3>

A. Up

<h3>Step-by-step explanation:</h3>

Parabolas are graphs that make U-shapes and are formed from quadratic equations.

Vertical Parabolas

There are 2 different types of parabolas: vertical and horizontal.

  • Vertical parabolas have a vertical axis of symmetry. So, they open up or down.
  • Horizontal parabolas have a horizontal axis of symmetry. So, they open left or right.

If the x-value is squared, then the parabola is vertical. So, this graph must open up or down.

Positive A-Value

The a-value is the coefficient before the squared term. In a vertical parabola, the graph opens up if the a-value is positive. On the other hand, the graph opens down when the a-value is negative.

In this case, the graph is a vertical parabola that opens up. This means that the range will have a minimum value but no maximum.

8 0
2 years ago
Please help!! Will mark brainliest
Ad libitum [116K]

Answer:

see below

Step-by-step explanation:

It is flipped about the x-axis so

g (x) =  -f(x)  = -e^x

and it is shifted 2 units RIGHT

    g(x) = - e^(x-2)

7 0
2 years ago
Which equation could the graph​
Lady bird [3.3K]
D is the answer to this question
3 0
3 years ago
Read 2 more answers
Solve for n<br><br>m = -2n-3/kn ​
Gekata [30.6K]

Answer:

n=\frac{-km}{2k+3}

Step-by-step explanation:

n=-km/2k+3

Hope this helps!

7 0
3 years ago
Other questions:
  • How would I work This Problem out and solve it thank you!
    13·1 answer
  • carol makes 9 1/3 cups of snack mix. she puts 2/3 cupof the snack mix into plastic bags does carol need?
    8·1 answer
  • What is the length of line segment kj ?
    14·2 answers
  • 45°<br> 45<br> 90<br> 36<br> 36<br> D<br> E<br> F
    10·2 answers
  • What is the area of the figure? <br> A. 48 <br> B. 84 <br> C. 66 <br> D. 72
    11·2 answers
  • Help me please and thank you!
    10·1 answer
  • 4 2/9 divided by 1/3 I need help please
    14·1 answer
  • The graph represents the journey of a bus from the bus stop to different locations:
    7·1 answer
  • If the double of a is 16 find a​
    13·2 answers
  • -2/9 - 1/12 - 7/18<br> Whats the answer
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!