Question

The test statistic value z = -2.22 of a z test for H 0 : μ = 0 versus H a : μ > 0. What is the P-value?

The test statistic value z = 2.22 of a z test for H 0 : μ = 0 versus H a : μ < 0. What is the P-value?

The test statistic value z = -2.22 of a z test for H 0 : μ = 0 versus H a : μ ≠ 0. What is the P-value?

For testing H 0 : μ = 0 versus H a : μ ≠ 0, the test statistic value t = 3.1 of a t test is obtained from a random sample of 7 measurements. What is the P-value?

For testing H 0 : μ = 0 versus H a : μ < 0, the test statistic value t = 3.1 of a t test is obtained from a random sample of 7 measurements. What is the P-value?

For testing H 0 : μ = 0 versus H a : μ > 0, the test statistic value t = -3.1 of a t test is obtained from a random sample of 7 measurements. What is the P-value?

Answer #1

1. H 0 : μ = 0

H a : μ > 0

z = -2.22

** P-value = 0.0132**

2. H 0 : μ = 0

H a : μ < 0

z = 2.22

** P-value = 0.9868**

3. H 0 : μ = 0

H a : μ ≠ 0

z = -2.22

** P-value = 0.0264**

4. H 0 : μ = 0

H a : μ ≠ 0

t = 3.1

n = 7

d.f = n-1 = 7-1 =6

**P-value = 0.0211**

5. H 0 : μ = 0

H a : μ < 0

t = 3.1

n = 7

d.f = n-1 = 7-1 =6

**P-value = 0.0106**

6. H 0 : μ = 0

H a : μ > 0

t = -3.1

n = 7

d.f = n-1 = 7-1 =6

**P-value = 0.9894**

In a hypothesis test with hypotheses H 0 : μ ≤ 45 and H 1 : μ
> 45 , a random sample of 69 elements selected from the
population produced a mean of 47.3. Assume that σ = 7.3, and that
the test is to be made at the 2.5% significance level. What is the
critical value of z? -1.96 1.96 -1.65 1.65 What is the value of the
test statistic, z, rounded to three decimal places? What is...

20) A test of significance is conducted for the hypotheses H 0 :
μ = 200 vs. H a : μ
> 200. Suppose the z −score for this test was calculated as z
=0.76. What is the P-value for this test of significance? Give your
answer to four decimal places.
22) A one sample t −test of significance is conducted for the
hypotheses H 0 : μ =
1000 vs. H a : μ <
1000 using a sample of size 100. The...

In a hypothesis test with hypotheses H 0 : μ = 90 and H 1 : μ ≠
90 , a random sample of 16 elements selected from the population
produced a mean of 85.8 and a standard deviation of 5.7. The test
is to be made at the 10% significance level. Assume the population
is normally distributed.
What are the critical values of t?
-1.341 and 1.341
-1.746 and 1.746
-1.753 and 1.753
-1.645 and 1.645
What is the...

22. In testing the null hypothesis H0:
μ1 - μ
2 = 0, the computed test statistic is z =
-1.66. The corresponding p-value is
a.
.9515.
b.
.0485.
c.
.9030.
d.
.0970.
15. The level of significance α
a.
is (1 - confidence coefficient).
b.
is always a negative value.
c.
can be any positive value.
d.
can be any value between -1.96 to 1.96.
10. The following information was obtained from matched
samples.
The daily production rates for a sample...

1.
H 0 : p = 0.73
H 1 : p ≠ 0.73
Your sample consists of 83 subjects, with 59 successes.
Calculate the test statistic, rounded to 2 decimal places z
=_________________
2.
Testing:
H0:μ=27.5
H1:μ<27.5
Your sample consists of 22 subjects, with a mean of 26.1 and
standard deviation of 4.55.
Calculate the test statistic, rounded to 2 decimal places.
t=__________

The test statistic of z equals= -2.04 is obtained when testing
the claim that p equals =1/2.
a. Using a significance level α=0.01 find the critical
value(s).
b. Should we reject Upper H 0 or should we fail to reject Upper
H 0?

5. In a test of hypotheses ?0: μ = 98.6 versus ?1 : μ > 98.6,
the rejection region is the interval [2.306,∞), the value of the
sample mean computed from a sample of size 9 is ?̅= 99.7, and the
value of the test statistic is t = 2.118. The correct decision and
justification are: (a) Do not reject ?0 because the sample is
small. (b) Do not reject ?0 because 2.118 < 2.306. (c) Reject ?0
because 99.7...

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?

Assume that z is the test statistic.
(a) H0: μ = 22.5,
Ha: μ > 22.5; x = 25.8,
σ = 7.8, n = 29
(i) Calculate the test statistic z. (Round your answer to
two decimal places.)
(ii) Calculate the p-value. (Round your answer to four
decimal places.)
(b) H0: μ = 200,
Ha: μ < 200; x = 191.1,
σ = 30, n = 24
(i) Calculate the test statistic z. (Round your answer to
two decimal places.)...

The test statistic of z= -1.27−1.27is obtained when testing the
claim that p=1/6.
a. Using a significance level of alpha=0.01, find the critical
value(s).
b. Should we reject Upper H 0 or should we fail to reject Upper
H 0?

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 4 minutes ago

asked 5 minutes ago

asked 5 minutes ago

asked 5 minutes ago

asked 7 minutes ago

asked 10 minutes ago

asked 11 minutes ago

asked 13 minutes ago

asked 13 minutes ago

asked 13 minutes ago

asked 13 minutes ago

asked 15 minutes ago