Question

A sample of 57 observations is selected from one population with a population standard deviation of 0.73. The sample mean is 2.62. A sample of 54 observations is selected from a second population with a population standard deviation of 0.64. The sample mean is 2.5. Conduct the following test of hypothesis using the 0.1 significance level: H0: μ1 – μ2 ≤ 0 H1: μ1 – μ2 > 0

a. Is this a one-tailed or a two-tailed test? This is a (Click to select) -tailed test.

b. State the decision rule. (Round the final answer to 2 decimal places.) The decision rule is to reject H0 if z is (Click to select) .

c. Compute the value of the test statistic. (Negative answer should be indicated by a minus sign. Round the final answer to 2 decimal places.) The test statistic is z

d. What is your decision regarding H0? H0 is (Click to select) .

e. What is the p-value? (Round the final answer to 4 decimal places.) The p-value is .

Answer #1

A sample of 66 observations is selected from one population with
a population standard deviation of 0.68. The sample mean is 2.67. A
sample of 45 observations is selected from a second population with
a population standard deviation of 0.68. The sample mean is 2.59.
Conduct the following test of hypothesis using the 0.1 significance
level:
H0: μ1 – μ2≤ 0
H1: μ1 – μ2 > 0
a. Is this a one-tailed or a two-tailed
test?
This is a (Click to...

A sample of 36 observations is selected from one population with
a population standard deviation of 3.8. The sample mean is 100.5. A
sample of 50 observations is selected from a second population with
a population standard deviation of 4.4. The sample mean is 99.3.
Conduct the following test of hypothesis using the 0.02
significance level.
H0 : μ1 = μ2
H1 : μ1 ≠ μ2
(a)
This is a (Click to select)twoone-tailed test.
(b)
State the decision rule....

A sample of 65 observations is selected from one population with
a population standard deviation of 0.78. The sample mean is 2.69. A
sample of 54 observations is selected from a second population with
a population standard deviation of 0.69. The sample mean is 2.57.
Conduct the following test of hypothesis using the 0.1 significance
level:
H0: μ1 – μ2≤ 0
H1: μ1 – μ2 > 0
a. Is this a one-tailed or a two-tailed
test?
This is a ___...

A sample of 69 observations is selected from one population with
a population standard deviation of 0.79. The sample mean is 2.69. A
sample of 48 observations is selected from a second population with
a population standard deviation of 0.67. The sample mean is 2.61.
Conduct the following test of hypothesis using the 0.05
significance level:
H0: μ1 – μ2≤ 0
H1: μ1 – μ2 > 0
a. State the decision rule. (Round the
final answer to 2 decimal places.)...

A sample of 36 observations is selected from one population with
a population standard deviation of 3.8. The sample mean is 100.0. A
sample of 47 observations is selected from a second population with
a population standard deviation of 4.4. The sample mean is 98.0.
Conduct the following test of hypothesis using the 0.10
significance level.
H0 : μ1 =
μ2
H1 : μ1 ≠
μ2
Is this a one-tailed or a two-tailed test?
One-tailed test
Two-tailed test
State the...

A sample of 46 observations is selected from a normal
population. The sample mean is 39, and the population standard
deviation is 9.
Conduct the following test of hypothesis using the 0.10
significance level.
H0 : μ ≤ 38
H1 : μ > 38
a. Is this a one- or two-tailed test?
(Click to select) (One-tailed test / Two-tailed test)
b. What is the decision rule? (Round
the final answer to 3 decimal places.)
(Click to select) (Reject /
Accept) H0...

A sample of 83 observations is selected from a normal
population. The sample mean is 28, and the population standard
deviation is 5. Conduct the following test of hypothesis using the
0.01 significance level:
H0: μ ≤ 26
H1: μ > 26
a. Is this a one- or two-tailed test?
(Click to select) Two-tailed
test One-tailed test
b. What is the decision rule?
Reject H0 when z
(Click to
select) > 2.33 ≤ 2.33 .
c. What is the value of the test statistic?...

A sample of 73 observations is selected from a normal
population. The sample mean is 43, and the population standard
deviation is 8. Conduct the following test of hypothesis using the
0.10 significance level:
H0: μ = 44
H1: μ ≠ 44
a. Is this a one- or two-tailed test?
(Click to select) One-tailed
test Two-tailed test
b. What is the decision rule?
Reject H0 and accept H1
when z does not lie in the region
from to .
c. What is the value...

A sample of 34 observations is selected from a normal
population. The sample mean is 28, and the population standard
deviation is 4. Conduct the following test of hypothesis using the
0.05 significance level.
H0: μ ≤ 26
H1: μ > 26
Is this a one- or two-tailed test?
One-tailed test
Two-tailed test
What is the decision rule?
Reject H0 when z > 1.645
Reject H0 when z ≤ 1.645
What is the value of the test statistic? (Round your...

A sample of 39 observations is selected from a normal
population. The sample mean is 19, and the population standard
deviation is 4. Conduct the following test of hypothesis using the
0.10 significance level.
H0: μ ≤ 18
H1: μ > 18
Is this a one- or two-tailed test?
One-tailed test
Two-tailed test
What is the decision rule?
Reject H0 when z > 1.282
Reject H0 when z ≤ 1.282
What is the value of the test statistic? (Round your...

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