Question

In
a one tail hypothesis test where you tehect Ho only in the lower
tail what us the critical value of the Tstat test statistic w/ 26
degrees of freedom at the .01 level if significance? (Round to 4
decimal places)

Answer #1

We use the T - table to find the critical value of the T statistic.

Given data is:

Level of aignificance = 0.01

Degrees of freedom,df = 26

Now, we look at the value 0.01 for a one-tail test in the colum and df=26 in the row. The value corresponding to the intersection of these two is the required value of T statistic.

From the T table, for df=26 and significance level= 0.01 for lower one-tail test, the value of T statistic is t = -2.4790. (-ve sign because of lower tail test)

The T-table is attached below.

In a one-tail hypothesis test where you reject Upper H 0 only
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question 1
what is the p-value if, in a two tail hypothesis test, ZSTAT =
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question 2
If, in a (two-tail) hypothesis test, the p-value is 0.0523 ,
what is your statistical decision if you test the null hypothesis
at the 0.02 level of significance?
Choose the correct answer below?
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b- since the p value is greater than a...

For a one-tail (lower) hypothesis test, if the z- or t-test
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Select one:
True
False

Determine (a) the χ2 test statistic, (b) the degrees
offreedom, (c) the critical value using alpha equals α=0.05,
and(d) test the hypothesis at the alpha equals α=0.05 level of
significance.
Outcome
A
B
C
D
Observed
48
52
51
49
Expected
50
50
50
50
Ho : Pa = Pb = Pc = Pd = 1/4
H1 : At least one proportions is different from the others.
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be made at the 5% significance level.
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-1.645
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What is the value of the pooled-variance tSTAT test
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