Question
We want to test H0: u1-u2 = 0 versus Ha: u1-u2 =/ 0. Using samples of...
We want to test H0: u1-u2 = 0 versus Ha: u1-u2 =/ 0. Using samples of size of size n1=n2=10, we find the following information: Xbar1 = 220, Xbar2 = 120, s2 = 7 and s2 = 11. What can we say about the P-value?
Answers Choices
0.01< P-Value < 0.025
0.025 < P-Value < 0.05
P-Value < 0.01
P-Value > 0.05
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
We want to test H0 : µ ≤ 120 versus Ha : µ > 120 ....
We want to test H0 : µ ≤ 120 versus Ha : µ > 120 . We know
that n = 324, x = 121.100 and, σ = 9. We want to test H0 at the .05
level of significance. For this problem, round your answers to 3
digits after the decimal point.
1. What is the value of the test statistic?
2. What is the critical value for this test?
3. Using the critical value, do we reject or...
We wish to test H0: μ = 120 versus Ha: μ ¹ 120, where ? is...
We wish to test H0: μ = 120 versus Ha:
μ ¹ 120, where ? is known to equal 14. The sample of n = 36
measurements randomly selected from the population has a mean of ?̅
= 15.
a. Calculate the value of the test
statistic z.
b. By comparing z with a critical
value, test H0 versus Ha at ? = .05.
Consider the following hypothesis test. H0: μ1 − μ2 = 0 Ha: μ1 − μ2 ≠...
Consider the following hypothesis test.
H0: μ1 − μ2 = 0
Ha: μ1 − μ2 ≠ 0
The following results are from independent samples taken from
two populations assuming the variances are unequal.
Sample 1
Sample 2
n1 = 35
n2 = 40
x1 = 13.6
x2 = 10.1
s1 = 5.7
s2 = 8.2
(a) What is the value of the test statistic? (Use x1
− x2. Round your answer to three decimal
places.)
(b) What is the degrees of...
Consider the following hypothesis test. H0: μ1 − μ2 = 0 Ha: μ1 − μ2 ≠...
Consider the following hypothesis test.
H0: μ1 − μ2 = 0
Ha: μ1 − μ2 ≠ 0
The following results are from independent samples taken from
two populations.
Sample 1
Sample 2
n1 = 35
n2 = 40
x1 = 13.6
x2 = 10.1
s1 = 5.8
s2 = 8.6
(a)
What is the value of the test statistic? (Use
x1 − x2.
Round your answer to three decimal places.)
(b)
What is the degrees of freedom for the t...
I MUST CALCULATE THE HYPOTHESIS TEST ON BEFORE AND AFTER: Ho: u1>u2 Ha: u1<u2 SAMPLE SIZE...
I MUST CALCULATE THE HYPOTHESIS TEST ON BEFORE AND AFTER:
Ho: u1>u2
Ha: u1<u2
SAMPLE SIZE IS 58
BEFORE THE IMPROVEMENT: 40 EXPENSES
AFTER THE IMPROVEMENT: 18 EXPENSES
THE IMPROVEMENT PLAN: WAS 8 WEEKS (5 WEEKS (INITIAL) AND 3 WEEKS
FOR THE CORRECTION).
BEFORE THE IMPROVEMENT:
•X=40
•N=58
•p=40/58=0.69
•Confidence Interval: After the improvement
•X=18
•N=58
•P=18/58=0.31
•Confidence Interval: (0.191, 0.429)
•95% confidence (1.96)that the interval contains the true
population proportion.
•With a Margin of error: 0.12
•
Before the...
Test H0: π = 0.25 versus HA: π 0.25 with p = 0.34 and n...
Test H0: π = 0.25 versus HA: π 0.25 with p = 0.34 and n = 100
at alpha = 0.05 and 0.01.
Consider the following hypothesis test. H0: μ1 − μ2 = 0 Ha: μ1 − μ2 ≠...
Consider the following hypothesis test.
H0: μ1 − μ2 = 0
Ha: μ1 − μ2 ≠ 0
The following results are from independent samples taken from
two populations.
Sample 1
Sample 2
n1 = 35
n2 = 40
x1 = 13.6
x2 = 10.1
s1 = 5.9
s2 = 8.5
(a)
What is the value of the test statistic? (Use
x1 − x2.
Round your answer to three decimal places.)
(b)
What is the degrees of freedom for the t...
Consider the following competing hypotheses: H0: ρxy ≥ 0 HA: ρxy < 0 The sample consists...
Consider the following competing hypotheses:
H0: ρxy ≥ 0
HA: ρxy < 0
The sample consists of 32 observations and the sample correlation
coefficient is –0.35. [You may find it useful to reference
the t table.]
a-1. Calculate the value of the test statistic.
(Round intermediate calculations to at least 4 decimal
places and final answer to 3 decimal places.)
a-2. Find the p-value.
A)0.025
p-value < 0.05
B)0.01 p-value < 0.025
C)p-value < 0.01
D)p-value 0.10
E)0.05 p-value < 0.10
Consider the following hypothesis test. H0: μ1 − μ2 ≤ 0 Ha: μ1 − μ2 >...
Consider the following hypothesis test.
H0: μ1 − μ2 ≤ 0
Ha: μ1 − μ2 > 0
The following results are for two independent samples taken from
the two populations.
Sample 1
Sample 2
n1 = 40
n2 = 50
x1 = 25.7
x2 = 22.8
σ1 = 5.7
σ2 = 6
(a)
What is the value of the test statistic? (Round your answer to
two decimal places.)
(b)
What is the p-value? (Round your answer to four decimal
places.)...
Consider the following hypothesis test. H0: μ1 − μ2 = 0 Ha: μ1 − μ2 ≠...
Consider the following hypothesis test.
H0: μ1 − μ2 = 0
Ha: μ1 − μ2 ≠ 0
The following results are for two independent samples taken from
the two populations.
Sample 1
Sample 2
n1 = 80
n2 = 70
x1 = 104
x2 = 106
σ1 = 8.4
σ2 = 7.5
(a)
What is the value of the test statistic? (Round your answer to
two decimal places.)
(b)
What is the p-value? (Round your answer to four decimal
places.)...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 4 minutes ago
asked 5 minutes ago
asked 9 minutes ago
asked 11 minutes ago
asked 11 minutes ago
asked 11 minutes ago
asked 13 minutes ago
asked 20 minutes ago
asked 25 minutes ago
asked 46 minutes ago
asked 52 minutes ago
asked 53 minutes ago