What is the answer to this please help me. 5th grader.

Find the appropriate rejection regions for the large-sample test statistic z in these cases. (Round your answers to two decimal

Usimov [2.4K]

Answer:

a) We have that the significance is given by $\alpha =0.01$ and we know that we have a right tailed test.

So for this case we need to look in the normal standard dsitribution a critical value that accumulates 1% of the area on the right and 99% of the area on the left. This value can be founded with the following excel code:

"=NORM.INV(1-0.01,0,1)"

And we got for this case $z_{crit}=2.33$

So then the rejection region would be $z>2.33$

b) We have that the significance is given by $\alpha =0.05$ , $\alpha/2 =0.025$ and we know that we have a two tailed test.

So for this case we need to look in the normal standard dsitribution a critical value that accumulates 2.5% of the area on the right and 97.5% of the area on the left. This value can be founded with the following excel code:

"=NORM.INV(1-0.025,0,1)"

And we got for this case $z_{crit}=\pm 1.96$

So then the rejection region would be $z>1.96 \cup z$

Step-by-step explanation:

Part a

We have that the significance is given by $\alpha =0.01$ and we know that we have a right tailed test.

So for this case we need to look in the normal standard dsitribution a critical value that accumulates 1% of the area on the right and 99% of the area on the left. This value can be founded with the following excel code:

"=NORM.INV(1-0.01,0,1)"

And we got for this case $z_{crit}=2.33$

So then the rejection region would be $z>2.33$

Part b

We have that the significance is given by $\alpha =0.05$ , $\alpha/2 =0.025$ and we know that we have a two tailed test.

So for this case we need to look in the normal standard dsitribution a critical value that accumulates 2.5% of the area on the right and 97.5% of the area on the left. This value can be founded with the following excel code:

"=NORM.INV(1-0.025,0,1)"

And we got for this case $z_{crit}=\pm 1.96$

So then the rejection region would be $z>1.96 \cup z$

7 0

4 years ago

Marisol bought a rug that is 8 feet long and 5 feet wide what is the area of the rug

Inessa05 [86]

Answer:

a= 40

area=length*width

area=8*5

area=40

hope this helped!

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Which line is the line of reflection? A. a B. b C. c D. d

Leto [7]

The line of reflection is b

You can see it much easier if take away all the clutter. Redraw the diagram and take way a d and especially c.

You should be left with only line b and the two triangles. You can see it much easier if you do that. Then just look at the parallel lines of the triangles. They are right across from each other.

6 0

3 years ago

Read 2 more answers

If all the angles are equivalent (the same), the angles must each be 60 degrees because 60 times 3 angles equals 180.

arlik [135]

Answer: A

Step-by-step explanation: true true true

6 0

3 years ago

F(x)= {2ˆx, X<0 {-xˆ2 -4x +1, 0 2

N76 [4]

Answer: If x is less than 0, 2 to the power of that negative x will be 1/2^x.

So, 1/2^x.

Step-by-step explanation:

I can't go any further without more info about value of x.

5 0

3 years ago