Which inequality is true

If you want to construct a 90% confidence interval, what critical value (z*) should you use? Group of answer choices 2.576 1.960

Rom4ik [11]

Answer:

For this case we know that the confidence level is 90% so then the significance level is $\alpha=1-0.9 =0.1$ and $\alpha/2 =0.05$ . And we can find in the normal standard distribution a value who accumulates 0.5 of the area on each tail and we got:

$z_{\alpha/2}= \pm 1.645$

And the best option would be:

1.645

Step-by-step explanation:

We assume that the parameter of interest is $\theta$ and we can assume that the distribution for this parameter is normally distributed so then the confidence interval assuming a two sided interval is given by:

$\hat \theta \pm z_{\alpha/2} SE$

Where $\hat \theta$ represent the estimator for the parameter, SE the standard error and $z_{\alpha/2}$ the critical value.

For this case we know that the confidence level is 90% so then the significance level is $\alpha=1-0.9 =0.1$ and $\alpha/2 =0.05$ . And we can find in the normal standard distribution a value who accumulates 0.5 of the area on each tail and we got:

$z_{\alpha/2}= \pm 1.645$

And the best option would be:

1.645

6 0

3 years ago

In one year a company found 9 defective parts out of 4500 parts picked for testing

FromTheMoon [43]

Answer:

hdhdhdjdmkdjddbgdgdhdjoudhnskshgebdlejdbdhjdjdjdk

7 0

3 years ago

The approximate solutions of x^-6x-11=0 are x=11.9 or x=5.9 <br>True or false

solmaris [256]

Answer:

(11.9^-6(11.9))-11=?

-10.9999958095 so false

5.9^-6(5.9)-11=

-10.9998601251 so also false

FALSE

Hope This Helps!!!

5 0

2 years ago

K + 12 > 20, if k = 15

Gwar [14]

Answer:

true

Step-by-step explanation:

15+12>20 <=> 27>20

7 0

4 years ago

Which point is closer to the x axis

posledela

there's no graph but the x axis is horizontal so look for the point closest to the horizontal line

5 0

3 years ago