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
melamori03 [73]
3 years ago
5

find the value of x2 values that separate the middle 90% from the rest of the distribution for 8 degrees of freedom

Mathematics
1 answer:
Anettt [7]3 years ago
4 0

Answer:

With alpha 0.95 and 8 degrees of freedom χ²= 2.73

And with alpha 0.05 and 8 degrees of freedom χ²=15.51

Step-by-step explanation:

The significance level ∝ = 1- 0.9 = 0.1

But we need the area of the middle so we divide this significance level with 2

so that we get exactly the middle area .

Dividing 0.1/2= 0.05

So we will have two values for chi square

One with  0.9 + 0.05 = 0.95 alpha and one with 0.05 alpha . This is because the chi square is right tailed.

So with alpha 0.95 and 8 degrees of freedom χ²= 2.73

And with alpha 0.05 and 8 degrees of freedom χ²=15.51

This can be shown with a graph.

You might be interested in
How to solve x/-3-2=5.5
amid [387]
Okay first set up the equation

 x
---      -2     = 5.5
-3

add over the 2

 x
---  = 7.5
-3

now you need to multiply the denominator by the answer

(-3)(7.5) = x
-22.5 = x
3 0
3 years ago
Expand and simplify -2(x + 4x^2) + 3(x^2 + 2x)
Vlad1618 [11]

......................

5 0
2 years ago
X+7/(7×+35)*(×^2-3×-40)/×-8
Leona [35]
I think it would be (x+7)/7
4 0
3 years ago
Read 2 more answers
(x+3)(x+2) can some one help with this one please (factoring trinomials)
Licemer1 [7]
Make it a trinomial by using the FOIL method.
First
Inside
Outside
Last

5 0
3 years ago
Vavilen inflated a huge balloon in 19 minutes. Then he poked a hole in the balloon so that it slowly leaked air out until it was
kaheart [24]

Considering balloon to be an spherical object

Volume of sphere = \frac{4}{3}\pi r^3, where r is the radius of sphere.

After 19 minutes ,If radius of balloon changes from r to R, the Volume changes from V to V'.

V'= \frac{4}{3}\pi R^3,

As given,rate at which the air leaked out of the balloon (in liters of air per minute) was half of the rate at which Vavilen inflated the balloon.

Also, \frac{dR}{dt}=2 \times \frac{dr}{dt}

Now, again the radius changes from R to r.So, Volume changes from V' to Back to V.

Time taken by the balloon to deflate = 38 minutes

But there is no relation between time and volume of Balloon.

So, we can't predict at which rate balloon is deflating or inflating.Apart from the statement given in Question:   \frac{dR}{dt}=2 \times \frac{dr}{dt}

7 0
3 years ago
Read 2 more answers
Other questions:
  • A function is created to represent the costs of living per person in the family. What restrictions would be made to the domain?
    10·1 answer
  • Can someone please help me.
    9·1 answer
  • Solve for zzz. 42=-7(z-3)42=−7(z−3)
    9·1 answer
  • Aleksandra started studying how the number of branches in her tree grows over time. Every 1.5 years, the number of branches incr
    6·1 answer
  • [GIVING BRANLIEST]
    14·2 answers
  • Determine the sum of the first 9 terms in the geometric series where r= -0.25 and a1= 256.
    5·2 answers
  • -16 = -4 -6 <br>Please help me with this question I just want to
    7·1 answer
  • Look at the picture below // 99 points // PLEASEE HELPP
    8·2 answers
  • The axis of the sphere below is 14 units in length. What is the surface area of
    6·2 answers
  • What is 8 3/5 + 4 4/5?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!