Question

1) You are performing a two-tailed test with a sample size of
61.

If α=.002α=.002, find the positive critical value, to three decimal
places.

tα/2=

2) You are performing a left-tailed test with a sample size of
22.

If α=.001α=.001, find the critical value, to three decimal
places.

tα=

3) You are performing a right-tailed test with a sample size of
99.

If α=.05α=.05, find the critical value, to three decimal
places.

tα=

Answer #1

solution

n =61

Degrees of freedom = df = n - 1 =61 - 1 = 60

= 0.002

/ 2 = 0.002/ 2 = 0.001

t_{
/2,df} = t_{0.001,60} =**3.232** ( using
student t table)

(b)

n =22

Degrees of freedom = df = n - 1 =22 - 1 = 21

= 0.001

t_{,df}
= t_{0.001,21} =**3.527** ( using student t
table)

(c)

n =99

Degrees of freedom = df = n - 1 =99 - 1 = 98

= 0.05

t_{,df}
= t_{0.05,98} =**1.661** ( using student t
table)

1. You are performing a two-tailed test with a sample size of
64.
If 0α=0.10, find the positive critical value, to three decimal
places.
tα/2=
2. You are performing a two-tailed test with a sample size of
46.
If α=0.002, find the positive critical value, to three decimal
places.
tα/2=

You are performing a left-tailed test.
If α=.001α=.001, find the critical value, to three decimal
places.
zα = _____
please explain, if so please provide steps on ti83 as well.
thank you.

calculate:
PART A: You are performing a two-tailed test.
If α=.10α=.10, find the positive critical value, to three decimal
places.
zα/2 =
PART B: Your claim results in the following alternative
hypothesis:
Ha : μ ≠≠ 162
which you test at a significance level of α=.10α=.10.
Find the positive critical value, to three decimal places.
zα/2 =
PART C: Your claim results in the following alternative
hypothesis:
Ha : μ << 127
which you test at a significance level of...

Find the χ2 critical values if you are conducting a χ2-two
tailed test based on a simple random sample of size 7, and using a
significance level α=0.02.
The left critical value is
The right critical value is

You are performing a left-tailed test with test statistic
z=−1.961z=-1.961, find the p-value accurate to 4 decimal
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You are performing a two-tailed test with test statistic
z=−2.96z=-2.96, find the p-value to 4 decimal places

A researcher conducts two t tests. Test 1 is a one-tailed test
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is a one-tailed test with a larger sample size at a .05 level of
significance. What do you know about the critical values for each
test?

A.
A test was given to a group of students. The grades and gender
are summarized below:
A
B
C
Total
Male
17
16
7
40
Female
4
3
12
19
Total
21
19
19
59
Let p represent the percentage of all female students who would
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Enter your answer using decimals (not percents).
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A) ±1.764 B) ±2.575 C) ±1.96 D) ±1.645
12) α = 0.09 for a right-tailed test.
A) ±1.96 B) 1.96 C) 1.34 D) ±1.34
13) α = 0.05 for a left-tailed test.
A) -1.96 B) ±1.96 C) ±1.645 D) -1.645
16) Find the critical value for a right-tailed test with α = 0.01
and n = 75.
A) 2.33 B) 1.645 C) 2.575 D) 1.96
17) Find the critical value for a...

Determine the critical value for a left-tailed test of a
population mean at the α = 0.025 level of significance based on a
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