Question
In: Math
Consider the following data for two independent random samples taken from two normal populations. Sample 1...
Consider the following data for two independent random samples taken from two normal populations.
| Sample 1 | 11 | 6 | 13 | 7 | 9 | 8 |
|---|---|---|---|---|---|---|
| Sample 2 | 8 | 7 | 9 | 4 | 5 | 9 |
(a)
Compute the two sample means.
Sample 1Sample 2
(b)
Compute the two sample standard deviations. (Round your answers to two decimal places.)
Sample 1Sample 2
(c)
What is the point estimate of the difference between the two population means? (Use Sample 1 − Sample 2.)
(d)
What is the 90% confidence interval estimate of the difference between the two population means? (Use Sample 1 − Sample 2. Round your answers to two decimal places.)
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Solutions
milcah answered 1 year agoRelated Solutions
Consider the following data for two independent random samples taken from two normal populations with equal...
Consider the following data for two independent random samples
taken from two normal populations with equal variances. Find the
95% confidence interval for µ1 - µ2. Sample 1: 11,5,12,9,6,8 Sample
2: 12,9,16,13,11,11
What are the left adn right endpoints?
Consider the following data for two independent (not matched) random samples taken from two normal populations....
Consider the following data for two independent (not matched)
random samples taken from two normal populations. Sample 1 10 7 13
7 9 8 Sample 2 8 7 8 4 6 9 In the next question you will be asked
to develop a confidence interval for the difference between the two
population means.
Consider the following results for two independent random samples taken from two populations. Sample 1 Sample...
Consider the following results for two
independent random samples taken from two populations.
Sample 1
Sample 2
n1 = 50
n2 = 30
x1 = 13.4
x2 = 11.7
σ1 = 2.3
σ2 = 3
What is the point estimate of the difference between the two
population means?
Provide a 90% confidence interval for the difference between
the two population means (to 2 decimals).
( , )
Provide a 95% confidence interval for the difference between
the two population means...
Consider the following results for two independent random samples taken from two populations. Sample 1 Sample...
Consider the following results for two independent random
samples taken from two populations.
Sample 1
Sample 2
n 1 = 50
n 2 = 35
x 1 = 13.1
x 2 = 11.5
σ 1 = 2.4
σ 2 = 3.2
What is the point estimate of the difference between the two
population means? (to 1 decimal)
Provide a 90% confidence interval for the difference between
the two population means (to 2 decimals). Use
z-table.
( , )
Provide a 95%...
Consider the following results for two independent random samples taken from two populations. Sample 1 Sample...
Consider the following results for two independent random
samples taken from two populations.
Sample 1
Sample 2
n 1 = 50
n 2 = 35
x 1 = 13.6
x 2 = 11.1
σ 1 = 2.4
σ 2 = 3.4
What is the point estimate of the difference between the two
population means? (to 1 decimal)
Provide a 90% confidence interval for the difference between
the two population means (to 2 decimals).
Provide a 95% confidence interval for the...
Consider the following results for two independent random samples taken from two populations. Sample 1 Sample...
Consider the following results for two independent random
samples taken from two populations.
Sample 1
Sample 2
n 1 = 40
n 2 = 30
x 1 = 13.1
x 2 = 11.1
σ 1 = 2.3
σ 2 = 3.4
What is the point estimate of the difference between the two
population means? (to 1 decimal)
Provide a 90% confidence interval for the difference between
the two population means (to 2 decimals). Use
z-table.
( , )
Provide a 95%...
Consider the following results for two independent random samples taken from two populations. Sample 1 Sample...
Consider the following results for two independent random
samples taken from two populations. Sample 1 Sample 2 n 1 = 50 n 2
= 30 x 1 = 13.8 x 2 = 11.5 σ 1 = 2.4 σ 2 = 3.4 What is the point
estimate of the difference between the two population means? (to 1
decimal) Provide a 90% confidence interval for the difference
between the two population means (to 2 decimals). Use z-table. ( ,
) Provide a...
Consider the following results for independent random samples taken from two populations. Sample 1 Sample 2...
Consider the following results for independent random samples
taken from two populations.
Sample 1
Sample 2
n1= 10
n2 = 40
x1= 22.3
x2= 20.3
s1= 2.5
s2 = 4.1
a. What is the point estimate of the difference
between the two population means (to 1 decimal)?
b. What is the degrees of freedom for
the t distribution (round
down)?
c. At 95% confidence, what is the margin of
error (to 1 decimal)?
d. What is the 95% confidence...
Consider the following results for two independent random samples taken from two populations. Sample 1: n1...
Consider the following results for two independent random
samples taken from two populations.
Sample 1:
n1 = 40
x̅1 = 13.9
σ1 = 2.3
Sample 2:
n2 = 30
x̅2 = 11.1
σ2 = 3.4
What is the point estimate of the difference between the two
population means? (to 1 decimal)
Provide a 90% confidence interval for the difference between the
two population means (to 2 decimals).
Provide a 95% confidence interval for the difference between the
two population means...
Consider the following results for two independent random samples taken from two populations. Sample 1: n1...
Consider the following results for two independent random
samples taken from two populations.
Sample 1:
n1 = 40
x̅1 = 13.9
σ1 = 2.3
Sample 2:
n2 = 30
x̅2 = 11.1
σ2 = 3.4
What is the point estimate of the difference between the two
population means? (to 1 decimal)
Provide a 90% confidence interval for the difference between the
two population means (to 2 decimals).
Provide a 95% confidence interval for the difference between the
two population means...
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