Step 1. Find the mean of the paired differences, d. Round your answer to one decimal place. Answer: Step 2. Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places. Answer: Step 3. Find the standard deviation of the paired differences to be used in constructin the confidence interval. Round your answer to one decimal place. Answer: Step 4. Construct the 99% confidence interval. Round your answers to one decimal place. Answer: Lower endpoint: Upper endpoint:

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
#10 please
10
=-1.42857l
Step 2. Find the critical value that should be used in constructing the confidence
interval. Round your answer to three decimal places.
d--1.4
a- 0.10
Answer:
1.943
2,n-1
to.io,8= 1.943
0.10
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: 9.8
573.722
95.62=9.7
n-1
8.5969727
5.769727
Step 4. Construct the 90% confidence interval. Round your answers to one decimal
7.1969727.
place.
Answer: Lower endpoint: d.6
Upper endpoint: 5.8
A state legislator wants to determine whether his voters' performance rating
100) has changed from last year to this year. The following table shows the
legislator's performance from the same ten randomly selected voters for last year and
this year. Use this data to find the 99% confidence interval for the true difference
between the population means.
10.
(0 -
(last year's rating). Assume that the populations of
voters' performance ratings are normally distributed for both this year and last year.
Let d =
(this year's rating)
Rating (last year) 48 52 85 83 60 92 78|90 83 71
Rating (this year) 64 63 66 88 44 84 6780 93 81
MAT 106.04 Professor Felix
eon 95 of 13
Transcribed Image Text:10 =-1.42857l Step 2. Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places. d--1.4 a- 0.10 Answer: 1.943 2,n-1 to.io,8= 1.943 0.10 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: 9.8 573.722 95.62=9.7 n-1 8.5969727 5.769727 Step 4. Construct the 90% confidence interval. Round your answers to one decimal 7.1969727. place. Answer: Lower endpoint: d.6 Upper endpoint: 5.8 A state legislator wants to determine whether his voters' performance rating 100) has changed from last year to this year. The following table shows the legislator's performance from the same ten randomly selected voters for last year and this year. Use this data to find the 99% confidence interval for the true difference between the population means. 10. (0 - (last year's rating). Assume that the populations of voters' performance ratings are normally distributed for both this year and last year. Let d = (this year's rating) Rating (last year) 48 52 85 83 60 92 78|90 83 71 Rating (this year) 64 63 66 88 44 84 6780 93 81 MAT 106.04 Professor Felix eon 95 of 13
Step 1. Find the mean of the paired differences, d. Round your answer to one decimal
place.
Answer:
Step 2. Find the critical value that should be used in constructing the confidence
interval. Round your answer to three decimal places.
Answer:
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:
Step 4. Construct the 99% confidence interval. Round your answers to one decimal
place.
Answer: Lower endpoint:
Upper endpoint:
Given two independent random samples with the following results:
Transcribed Image Text:Step 1. Find the mean of the paired differences, d. Round your answer to one decimal place. Answer: Step 2. Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places. Answer: 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: Step 4. Construct the 99% confidence interval. Round your answers to one decimal place. Answer: Lower endpoint: Upper endpoint: Given two independent random samples with the following results:
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