Answer:
We will not reject the null hypothesis.
There is not enough evidence to support the claim that the mean age of death
-row inmates is different from 36.2 years.
Step-by-step explanation:
Consider the provided information.
The average age of an inmate in death row in 1989 was 36.2 years of age.
The sociologist collects a sample of 32 death-row inmates and finds that their mean age is 38.9 with a standard deviation of 9.6 years. Test the Sociologist’s claim at 0.05 significance level.
From the above information.
, ![H_a: \mu \neq 36.2](https://tex.z-dn.net/?f=H_a%3A%20%5Cmu%20%5Cneq%2036.2)
,
,
, n=32
This is a two sided test, with df = 32-1 = 31 and the critical values are
.
Now find the z score as shown:
![z=\frac{\bar x-\mu}{\frac{\sigma}{\sqrt{n}}}](https://tex.z-dn.net/?f=z%3D%5Cfrac%7B%5Cbar%20x-%5Cmu%7D%7B%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D%7D)
Substitute the respective values:
![z=\frac{38.9-36.2}{\frac{9.6}{\sqrt{32}}}](https://tex.z-dn.net/?f=z%3D%5Cfrac%7B38.9-36.2%7D%7B%5Cfrac%7B9.6%7D%7B%5Csqrt%7B32%7D%7D%7D)
![z=\frac{2.7}{\frac{9.6}{5.6568}}}](https://tex.z-dn.net/?f=z%3D%5Cfrac%7B2.7%7D%7B%5Cfrac%7B9.6%7D%7B5.6568%7D%7D%7D)
![z=1.59](https://tex.z-dn.net/?f=z%3D1.59)
Since, 1.591 doesn’t lie in the critical region, hence we will not reject the null hypothesis.
There is not enough evidence to support the claim that the mean age of death
-row inmates is different from 36.2 years.
Answer:
Yes, I just checked it. All of it is right!
Step-by-step explanation:
Good Job!!
SN=7
A^2+B^2=C^2 (C is the hypotenuse)(A and B are the other sides)
24^2+B^2=25^
576+B^2=625
B^2=49
B=7
Answer:
Its C :)
Step-by-step explanation:
Answer:
11/12 is odd
Step-by-step explanation:
as it contain many decimal places