Given two dependent random samples with the following results: Population 1 29 32 42 43 2330 21 Population 2 23 46 44 48 35 21 18 Use this data to find the 90% confidence interval for the true difference between th. population means. Let d = (Population 1 entry)- (Population 2 entry). Assume that both populations are normally distributed.
Given two dependent random samples with the following results: Population 1 29 32 42 43 2330 21 Population 2 23 46 44 48 35 21 18 Use this data to find the 90% confidence interval for the true difference between th. population means. Let d = (Population 1 entry)- (Population 2 entry). Assume that both populations are normally distributed.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
#40 step 4 please
Transcribed Image Text:S2 = 22
Use this data to find the 90% confidence interval for the true difference between the
population means. Assume that the population variances are equal and that the two
populations are normally distributed
Step 1. Find the critical value that should be used in constructing the confidence
interval. Round your answer to three decimal places.
Answer: .740
Step 2. Find the standard error of the sampling distribution to be used in constructing
the confidence interval. Round your answer to the nearest whole number.
1928
14
Answer:
SE
11 t
29.6529
Step 3. Construct the 90% confidence interval. Round your answers to the nearest
T1740
whole number.
740(1).
Answer: Lower endpoint:
-41
Upper endpoint:
40.
Given two dependent random samples with the following results:
Population 1 29 32 42 43 23 30 21
Population 2 23 46 44 48 35 21 18
7.36
Use this data to find the 90% confidence interval for the true difference between the
population means.
Let d =
(Population 1 entry) - (Population 2 entry). Assume that both
populations are normally distributed.
MAT 106.04 Professor Felix
133 of
Transcribed Image Text:di
Yi
23
X3B
29
- 14
46
32
44
-5
42
43
23
30
21
48
-12
35
21
18
3
Step 1. Find the mean of the paired differences, d. Round your answer to one decimal
place.
Answer: 2,
-15=-2.1
Step 2. Find the critical value that should be used in constructing the confidence
interval. Round your answer to three decimal places.
df-7-1-6
Answer:.943
CL 90%.
Step 3. Find the standard deviation of the paired differences to be used in constructing
the confidence interval. Round your answer to one decimal place.
Answer:
8.8
462.87
= 77.145
Step 4. Construct the 90% confidence interval. Round your answers to one decimal
place.
8.8.
Answer: Lower endpoint:
Upper endpoint:
12
41.
Given two independent random samples with the following results:
n1 = 225
p1 = 0.47
n2 = 272
p2 = 0.67
Use this data to find the 98% confidence interval for the true difference between the
population proportions.
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