Question

14.

Calculate the critical t-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 t-values to four decimal places.

- Find the critical t-value(s) for a left-tailed test of hypothesis for a mean, assuming the population standard deviation is unknown, with a sample size of 25 and let α=0.005.
- t=
- Find the critical t-value(s) for a right-tailed test of hypothesis for a mean, assuming the population standard deviation is unknown, with a sample size of 72 and let α=0.0005.
- t=
- Find the critical t-value(s) for a two-tailed test of hypothesis for a mean, assuming the population standard deviation is unknown, with a sample size of 85 and a signifance level of 2%.
- t=
- Find the critical t-value(s) for a two-tailed test of hypothesis for a mean, assuming the population standard deviation is unknown, with a sample size of 50 and a signifance level of 10%.
- t=

Answer #1

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...

15. Calculate the pp-value for each of the given hypothesis test
scenarios below. Round pp-values to four decimal places.
Find the p-value for a left-tailed test of hypothesis
for a mean when the test statistic has been calculated as -2.08.
Assume the population standard deviation is known.
p-value=
Find the p-value for a right-tailed test of hypothesis
for a mean when the test statistic has been calculated as 1.26.
Assume the population standard deviation is known.
p-value=
Find the p-value...

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...

Complete parts (a) through (c) below.
(a) Determine the critical value(s) for a right-tailed test
of a population mean at the alphaα=.10 with 15 degrees of freedom.
tcrit=
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=20
c) Determine the critical value(s) for a two-tailed test of a
population mean at the α=.01 level of significance based on a
sample size of n=18

Use the Student's t-distribution to find the t-value for each of
the given scenarios. Round t-values to four decimal places.
Find the value of t such that the area in the left tail of the
t-distribution is 0.0005, if the sample size is 19.
t=
Find the value of t such that the area in the right tail of the
t-distribution is 0.025, if the sample size is 41.
t=
Find the value of t such that the area in...

Calculate the critical value, test Ho: and state the final
decisions for each of the following cases.
4 (a)
Level of significance = 5% 2-tailed test
Sample size = 50
Population mean = 750
Population standard deviation = 60 Sample mean = 600
4 (b)
Level of significance = 5%
1-tailed test
Sample standard deviation = 25
Sample size = 45 Population mean = 290 Sample mean = 390

Assume the computed t-statistic was t0=1.987
Find the t-critical value for a one-tailed test at the 0.05
significance level with 19
degrees of freedom. Is there sufficient evidence to reject the
null hypothesis?
Find the t-critical value for a one-tailed test at the 0.05
significance level with a sample
size of 30. Is there sufficient evidence to reject the null
hypothesis?
Find the t-critical value for a two-tailed test at the 0.05
significance level with 15
degrees of freedom. Is...

When σ (population standard deviation) is unknown
[Critical Value Approach]
The value of the test statistic t for the sample mean is
computed as follows:
t = with
degrees of freedom d.f. = n – 1
where n is the sample size, µ is the mean of the null
hypothesis, H0, and s is the standard deviation of the
sample.
t is in the rejection
zone: Reject the null hypothesis, H0
t is not in the rejection...

Find the critical value and rejection region for the type of
t-test with level of significance α and sample size n. Two-tailed
test, α = 0.1, n = 36

Determine the critical value(s) of the test statistic for each
of the following small sample tests for the population mean where
the assumption of normality is satisfied. Round your answer to four
decimal places.
Step 1 of 3:
Left-tailed test,α=0.1,n=9
Step 2 of 3:
Right-tailed test ,α=0.05,n=23
Two-tailed test, α=0.1,n=27 (negative and positive critical
values)

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 1 minute ago

asked 2 minutes ago

asked 20 minutes ago

asked 24 minutes ago

asked 29 minutes ago

asked 30 minutes ago

asked 34 minutes ago

asked 46 minutes ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 3 hours ago