Statistics: Informed Decisions Using Data (5th Edition)
5th Edition
ISBN: 9780134133539
Author: Michael Sullivan III
Publisher: PEARSON
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Chapter 12, Problem 4RE
To determine
To test: The claim.
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Calculate the 90% confidence interval for the population mean difference using the data in the attached image. I need to see where I went wrong.
Microsoft Excel snapshot for random sampling: Also note the formula used for the last
column
02
x✓ fx =INDEX(5852:58551, RANK(C2, $C$2:$C$51))
A
B
1
No.
States
2
1
ALABAMA
Rand No.
0.925957526
3
2
ALASKA
0.372999976
4
3
ARIZONA
0.941323044
5
4 ARKANSAS
0.071266381
Random Sample
CALIFORNIA
NORTH CAROLINA
ARKANSAS
WASHINGTON
G7
Microsoft Excel snapshot for systematic sampling:
xfx INDEX(SD52:50551, F7)
A
B
E
F
G
1
No.
States
Rand No. Random Sample
population
50
2
1 ALABAMA
0.5296685 NEW HAMPSHIRE
sample
10
3
2 ALASKA
0.4493186 OKLAHOMA
k
5
4
3 ARIZONA
0.707914 KANSAS
5
4 ARKANSAS 0.4831379 NORTH DAKOTA
6
5 CALIFORNIA 0.7277162 INDIANA
Random Sample
Sample Name
7
6 COLORADO 0.5865002 MISSISSIPPI
8
7:ONNECTICU 0.7640596 ILLINOIS
9
8 DELAWARE 0.5783029 MISSOURI
525
10
15
INDIANA
MARYLAND
COLORADO
Suppose the Internal Revenue Service reported that the mean tax refund for the year 2022 was $3401. Assume the standard deviation is $82.5 and that the amounts refunded follow a normal probability distribution. Solve the following three parts? (For the answer to question 14, 15, and 16, start with making a bell curve. Identify on the bell curve where is mean, X, and area(s) to be determined.
1.What percent of the refunds are more than $3,500?
2. What percent of the refunds are more than $3500 but less than $3579?
3. What percent of the refunds are more than $3325 but less than $3579?
Chapter 12 Solutions
Statistics: Informed Decisions Using Data (5th Edition)
Ch. 12.1 - 1. True or False: The shape of the chi-square...Ch. 12.1 - Prob. 2AYUCh. 12.1 - 3. Suppose there are n independent trials of an...Ch. 12.1 - Prob. 4AYUCh. 12.1 - Prob. 5AYUCh. 12.1 - Prob. 6AYUCh. 12.1 - Prob. 7AYUCh. 12.1 - In Problems 7–10, determine (a) the χ2 test...Ch. 12.1 - Prob. 9AYUCh. 12.1 - Prob. 10AYU
Ch. 12.1 - NW 11. Plain M&Ms According to the manufacturer of...Ch. 12.1 - 12. Peanut M&Ms According to the manufacturer of...Ch. 12.1 - Prob. 13AYUCh. 12.1 - Prob. 14AYUCh. 12.1 - 15. Always Wear a Helmet The National Highway...Ch. 12.1 - 16. Religion in Congress Is the religious make-up...Ch. 12.1 - Prob. 17AYUCh. 12.1 - Prob. 18AYUCh. 12.1 - NW 19. The NHL In his book Outliers, Malcolm...Ch. 12.1 - Prob. 20AYUCh. 12.1 - Prob. 21AYUCh. 12.1 - Prob. 22AYUCh. 12.1 - Prob. 23AYUCh. 12.1 - Prob. 24AYUCh. 12.1 - Prob. 25AYUCh. 12.1 - Prob. 26AYUCh. 12.1 - Prob. 27AYUCh. 12.1 - 28. Putting It Together: Weldon's Dice On February...Ch. 12.1 - Prob. 29AYUCh. 12.1 - Prob. 30AYUCh. 12.1 - 31. Explain why chi-square goodness-of-fit tests...Ch. 12.1 - Prob. 32AYUCh. 12.2 - 1. True or False: The expected frequencies in a...Ch. 12.2 - Prob. 2AYUCh. 12.2 - Prob. 3AYUCh. 12.2 - Prob. 4AYUCh. 12.2 - Prob. 5AYUCh. 12.2 - Prob. 6AYUCh. 12.2 - Prob. 7AYUCh. 12.2 - Prob. 8AYUCh. 12.2 - Prob. 9AYUCh. 12.2 - Prob. 10AYUCh. 12.2 - Prob. 11AYUCh. 12.2 - Prob. 12AYUCh. 12.2 - Prob. 13AYUCh. 12.2 - Prob. 14AYUCh. 12.2 - NW 15. What's in a Word? In a recent survey...Ch. 12.2 - Prob. 16AYUCh. 12.2 - Prob. 17AYUCh. 12.2 - Prob. 18AYUCh. 12.2 - Prob. 19AYUCh. 12.2 - Prob. 20AYUCh. 12.2 - Prob. 21AYUCh. 12.2 - 22. Homeruns Go to...Ch. 12.2 - Prob. 23AYUCh. 12.2 - Prob. 24AYUCh. 12.3 - In Problems 1 and 2, test whether the population...Ch. 12.3 - Prob. 2AYUCh. 12.3 - Prob. 3AYUCh. 12.3 - Prob. 4AYUCh. 12.3 - Prob. 5AYUCh. 12.3 - Prob. 6AYUCh. 12.3 - Prob. 7AYUCh. 12.3 - 8. Children and Childcare The General Social...Ch. 12 - Prob. 1RECh. 12 - Prob. 2RECh. 12 - Prob. 3RECh. 12 - Prob. 4RECh. 12 - Prob. 5RECh. 12 - Prob. 6RECh. 12 - Prob. 1CTCh. 12 - Prob. 2CTCh. 12 - Prob. 3CTCh. 12 - Prob. 4CTCh. 12 - Prob. 5CTCh. 12 - Prob. 6CTCh. 12 - Prob. CS
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