Question
In: Statistics and Probability
Write a paragraph or more to explain what test stats and critical values are, and what...
Write a paragraph or more to explain what test stats and critical values are, and what they are for?
Solutions
Expert Solution
Test Stats is a random variable fully depend on the sample data. It is used in the statistical hypothesis testing. Hypothesis testing is totally specified on the test statistic. we can use the test statistic to determine weather the null hypothesis is rejected or not. On the basis of test stats we can compare the given data with what is expected on the null hypothesis.
Critical value is the point on a point on the test distribution that is compared to the test statistic weather to reject the null hypothesis. If the absolute value of the test statistic is greater than the critical value then it is called stattistical significance and we reject the null hypothesis.
In the statistical hypothesis problem, Test stats and critical value are two important parts. From the given sample data we can able to find the value of the test statistic and using the concept of the critical value we can come to the singificant decision to reject or accept the null hypothesis.
orchestra answered 1 year agoRelated Solutions
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What are the critical values of t for each of the following values of N and...
What are the critical values of t for each of the
following values of N and alpha using a nondirectional
hypothesis?
N
a
a.
12
0.05
b.
20
0.01
c.
2
0.05
d.
5
0.02
e.
19
0.01
Now using a directional hypothesis?
N
a
f.
13
0.025
g.
17
0.005
h.
8
0.05
i.
15
0.01
j.
10
0.05
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functions is optimized and test the second-order conditions to see
if the function is at a relative maximum, relative minimum,
inflection point, or saddle point.
“(c) z = 8x^2 − 6y^3 + 144xy − 323
(d) z = 6x^3 + 6y^3 + 54xy − 195”
ans((c) (0, 0), inflection point; (648, −72), relative
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process
1a For the following degrees of freedom, list the critical values for a two-tailed test at...
1a For the following degrees of freedom, list the critical
values for a two-tailed test at a .01, .05, and .10 level of
significance.
.01
.05
.10
df =
8
___
___ ___
df =
20
___
___ ___
df =
40
___
___ ___
df = 120
___
___ ___
b. As the level of significance increases (from .01 to .10),
does the critical value increase or decrease?
c. As the degrees of freedom...
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