Question

a.Two-tailed test, α=0.07

The critical value(s) is/are z= ______

(Round to two decimal places as needed. Use a comma to separate answers as needed.)

b. Right-tailed test, α=0.10, n=6

The critical value(s) is/are _____

(Round to the nearest thousandth as needed. Use a comma to separate answers as needed.)

c. TwoTwo-tailed test, α=0.10, n=28

The critical value(s) is/are ______

(Round to the nearest thousandth as needed. Use a comma to separate answers asneeded.)

Answer #1

a) two-tailed test

α=0.07

for two-tailed test , there will we two critical values

area in each tail beyond the critical values = α/2 = 0.07/2 = 0.035

using the standard normal probability table ,

critical values for test statistic are, -z_{0.035} =
-1.81 and z_{0.035} = 1.81

b) Right-tailed test, α=0.10, n=6

1- α = 1-0.10 = 0.90

critical value corresponding to the area calculated above = z = 1.28

c)

α=0.10

area in each tail beyond the critical values = α/2 = 0.10/2 = 0.05

using the standard normal probability table ,

critical values for test statistic are, -z_{0.05} =
-1.65 and z_{0.05} = 1.65

a, Find the critical F-value for a right-tailed test using the
indicated level of significance α and degrees of freedom d.f.N and
d.f.D.
α=0.10, d.f.N=7, Dd.f.=24
The critical F-value is _____
(Round to two decimal places as needed.)
b.Find the expected frequency, Ei, for the given values of n
and pi.
n=230, pi=0.27
Ei= _____ (Type an integer or a decimal.)

12.
Calculate the critical z-value(s) for each of the given
hypothesis test scenarios below. If mulitple critical values exist
for a single scenario, enter the solutions using a comma-separated
list. Round z-values to two decimal places.
Find the critical z-value(s) for a left-tailed test of
hypothesis for a mean, assuming the population standard deviation
is known, with a sample size of 98 and let α=0.005.
z=
Find the critical z-value(s) for a right-tailed test of
hypothesis for a mean, assuming...

1. Find the critical z-value(s) for a right-tailed test with α =
0.02Assume a normal population.
2. Find the critical t-value(s) for a two-tailed test with n =
12, α = 0.05. Assume a normal distribution.
3. Express the claim in symbolic form: At least half the
students at this school carpool to campus.
4. Express the claim in symbolic form:The average number of sick
days taken annually by individual faculty members at this school is
4.
5. Express the claim...

10. Assume that the significance level is α=0.05. Use the given
statement and find the P-value and critical value(s).The test
statistic of z= −1.85 is obtained when testing the claim that
p=1/5.
P-values= ___
(Round to four decimal places as needed.)
The critical value(s) is/are z=_____
(Round to two decimal places as needed. Use a comma to separate
answers as needed.)
11. Assume that the significance level is α=0.01. Use the given
information to find the P-value and the critical...

Determine the appropriate critical value(s) for each of the
following tests concerning the population mean:
a. upper-tailed test:
alphaαequals=0.10
nequals=25
sigmaσequals=3.0
b. lower-tailed test:
alphaαequals=0.01
nequals=26
sequals=7.0
c. two-tailed test:
alphaαequals=0.02
nequals=51
sequals=5.9
d. two-tailed test:
alphaαequals=0.05
nequals=36
sigmaσequals=5.5
(Round to two decimal places as needed. Use a comma to separate
answers as needed.)

Determine the upper-tail critical value in each of the
following circumstances. (Round to four decimal places as
needed)
a.
1−α= 0.95, n=63
d.
1−α=0.95, n=28
b.
1−α= 0.99, n=63
e.
1−α=0.90, n=18
c.
1−α= 0.95, n=57
a. t = (Round to four decimal places as
needed)
b. t = (Round to four decimal places as
needed)
c. t = (Round to four decimal places as
needed)
d. t = (Round to four decimal places as
needed)
e. t = (Round...

Find the indicated critical value. z 0.07 Click to view page 1
of the table. z 0.07 equals nothing (Round to two
decimal places as needed.)

The test statistic of z = −1.67 is obtained when testing the
claim that p = 2/3.
a. Using a significance level of α = 0.01, find
the critical value(s).
b. Should we reject Ho or should we fail to
reject Ho?
a. The critical value(s) is/are z =
(Round to two decimal places as needed. Use a comma to separate
answers as needed.)

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.

Complete parts (a) through (c) below.
(a) Determine the critical value(s) for a right-tailed test
of a population mean at the α=0.01 level of significance with 20
degrees of freedom.
(b) Determine the critical value(s) for a left-tailed test of
a population mean at the α=0.05 level of significance based on a
sample size of n =15
(c) Determine the critical value(s) for a two-tailed test of
a population mean at the α =0.01 level of significance based on a...

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