Question

The value obtained for the test statistic, z, in a one mean z-test is given. Whether the test is two-tailed, left tailed, right tailed is also specified. For parts (a) and (b), determine:

a) the test statistic in a two tailed test is z= -0.88.

The p-value is : _?

At the 1% significance level, the data _____ sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis because the obtained p-value is _______ the significance level.

b) The test statistic in a two tailed test is z=0.26.

The p-value is : _?

At the 1% significance level, the data _______ sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis because the obtained p-value is _____ the significance level.

Please show all possible work for these as I am having the most difficult time with understanding what a motherlovingdovehoarding p-value is, I just don’t get it... Thanks in advance!

Answer #1

The value obtained for the test statistic, z, in a one-mean
z-test is given. Whether the test is two-tailed, left tailed, or
right-tailed is also specified. For parts (a) and (b), determine
the P-value and decide whether, at the 11% significance level,
the data provide sufficient evidence to reject the null hypothesis
in favor of the alternative hypothesis.
a) The test statistic in a left-tailed test is z=-1.65
the P-value is ___ (round to three decimal places as
needed.)
At...

10. In each part, we have given the value obtained for the test
statistic z in a one-mean z-test. We have also specified whether
the test is two tailed, left tailed, or right tailed. Determine the
P-value in each case and decide whether, at the 5% significance
level, the data provide sufficient evidence to reject the null
hypothesis in favor of the alternative hypothesis. EXPLAIN AND SHOW
ALL WORK
a. z = −1.25; left-tailed test
b. z = 2.36; right-tailed...

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...

The test statistic of z = −2.21 is obtained when testing the
claim that p = 3/5.
a. Using a significance level of α = 0.10, find the
criticalvalue(s).
b. Should we reject Upper H0 or should we fail to reject Upper
H0?
a. The critical value(s) is/are z = ____________.
b. Choose the correct conclusion below:
A. Fail to reject H0. There is not sufficient evidence to
support the claim that p = 3/5
B. Reject H0. There is...

The test statistic of z= 2.15 is obtained when testing the claim
that p>0.2.
a. Identify the hypothesis test as being two-tailed,
left-tailed, or right-tailed.
b. Find the P-value.
c. Choose the correct conclusion below. A. Reject Upper H 0.
There is sufficient evidence to support the claim that p>0.2. B.
Fail to reject Upper H 0. There is sufficient evidence to support
the claim that p>0.2. C. Fail to reject Upper H 0. There is not
sufficient evidence to...

The test statistic of z= "1.43" is obtained when
testing claims that p>0.4 using a significance level of a=0.01,
should we reject H0 or should we fail to reject H0. identify the
hypothesis test as being two-tailed, left-tail, or
right-tailed.
find the p-value

The test statistic of z=1.21 is obtained when testing the claim
that p?0.653. a. Identify the hypothesis test as being? two-tailed,
left-tailed, or? right-tailed. b. Find the? P-value. c. Using a
significance level of ?=0.01?, should we reject Upper H 0H0 or
should we fail to reject Upper H 0?

Given the following information calculate the z test statistic,
p-value and state whether or not to reject the null hypothesis
based on the significance level.
Hoμ=15,Haμ≠15
x¯=12.1,σ=1.5,n=16,α=0.10
What is z
What is p-value
Reject the null or fail to reject the null?

find the p-value for the indicated hypothesis test
with the given standardized test statistic, z. decide whether to
reject H0 for the given level of significance a. right-tailed test
with statistic z=1.47 and a=0.06. p-valuue =

Elementary Statistics by Mario Triola, 13th edition Chapter
8.1.17
The test statistic of z=2.23 is obtained when testing the claim
that p>0.3
a. Identify the hypothesis test as being two-tailed,
left-tailed, or right-tailed.
b. Find the P-value.
c. Using a significance level of α=0.05, should we reject H0,
or should we fail to reject H0?

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