Volunteer Swim time with placebo (mins, 1km) Swim time with coffee (mins, 1km) Volunteer Swim time with placebo (mins, 1km) Swim time with coffee (mins, 1km) 1 2 26.5 22.6 3 11 12 24.4 24.9 22.1 23.2 13 4 24.9 23.5 14 5 6 25.3 21.3 26.4 15 7 24.7 20.9 23.3 16 17 22.4 22.3 21.2 24.4 22.7 20.7 27.2 8 9 22.7 18 24.8 23.8 23.4 25.3 21.9 19 10 22.4 22.1 20 22.7 20.7 20.6 21.2 23.3 19.5 19.5 26.5 22.4 22.0 21.5

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 26SGR
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Given the information provided, need help calculating a 95% confidence interval for the mean improvement in speed due to taking the caffeine pill. Thank you :)

Volunteer
Swim time with
placebo (mins,
1km)
Swim time with
coffee (mins,
1km)
Volunteer
Swim time
with placebo
(mins, 1km)
Swim time
with coffee
(mins, 1km)
1
2
26.5 22.6 24.4
3
11 12
20.7 20.6
4 5
13
24.9
24.9 22.1 23.2 23.5 24.7 20.9
14
6
25.3 21.3
21.2 23.3
15
16
7
26.4
22.4 22.3 21.2 24.4 22.7 20.7 27.2
17
8
19.5 19.5 26.5
23.3 23.4 25.3 21.9
9
22.7 24.8 22.1
18
10
19
23.8 22.4
20
22.7
22.4 22.0 21.5
Transcribed Image Text:Volunteer Swim time with placebo (mins, 1km) Swim time with coffee (mins, 1km) Volunteer Swim time with placebo (mins, 1km) Swim time with coffee (mins, 1km) 1 2 26.5 22.6 24.4 3 11 12 20.7 20.6 4 5 13 24.9 24.9 22.1 23.2 23.5 24.7 20.9 14 6 25.3 21.3 21.2 23.3 15 16 7 26.4 22.4 22.3 21.2 24.4 22.7 20.7 27.2 17 8 19.5 19.5 26.5 23.3 23.4 25.3 21.9 9 22.7 24.8 22.1 18 10 19 23.8 22.4 20 22.7 22.4 22.0 21.5
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