7.2-10. Twenty-four 9th- and 10th-grade high school girls were put on an ultraheavy rope-jumping program. The fol- lowing data give the time difference in seconds for each girl ("before program time" minus "after program time") for the 40-yard dash: 0.28 0.01 0.13 0.33 -0.03 0.07 -0.18 -0.14 -0.33 0.01 0.22 0.29 -0.08 0.23 0.08 0.04 -0.30 -0.08 0.09 0.70 0.33 -0.34 0.50 0.06 (a) Give a point estimate of p, the mean of the difference in race times.
7.2-10. Twenty-four 9th- and 10th-grade high school girls were put on an ultraheavy rope-jumping program. The fol- lowing data give the time difference in seconds for each girl ("before program time" minus "after program time") for the 40-yard dash: 0.28 0.01 0.13 0.33 -0.03 0.07 -0.18 -0.14 -0.33 0.01 0.22 0.29 -0.08 0.23 0.08 0.04 -0.30 -0.08 0.09 0.70 0.33 -0.34 0.50 0.06 (a) Give a point estimate of p, the mean of the difference in race times.
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section: Chapter Questions
Problem 7CR
Related questions
Question
![7.2-10. Twenty-four 9th- and 10th-grade high school girls
were put on an ultraheavy rope-jumping program. The fol-
lowing data give the time difference in seconds for each
girl ("before program time" minus "after program time")
for the 40-yard dash:
0.28 0.01 0.13 0.33 -0.03 0.07 0.18 -0.14
-0.33 0.01 0.22 0.29 -0.08 0.23 0.08 0.04
-0.30 -0.08 0.09 0.70 0.33 -0.34 0.50 0.06
(a) Give a point estimate of up, the mean of the difference
in race times.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2b62c17d-5c05-48d6-ac2b-a3a7c31907f7%2Fddecd590-9668-4363-961c-141368d31ef9%2F37tuw3r_processed.png&w=3840&q=75)
Transcribed Image Text:7.2-10. Twenty-four 9th- and 10th-grade high school girls
were put on an ultraheavy rope-jumping program. The fol-
lowing data give the time difference in seconds for each
girl ("before program time" minus "after program time")
for the 40-yard dash:
0.28 0.01 0.13 0.33 -0.03 0.07 0.18 -0.14
-0.33 0.01 0.22 0.29 -0.08 0.23 0.08 0.04
-0.30 -0.08 0.09 0.70 0.33 -0.34 0.50 0.06
(a) Give a point estimate of up, the mean of the difference
in race times.
![(b) Find a one-sided approximate 95% confidence inter-
val that is a lower bound for #p.
(c) Does it look like the rope-jumping program was effec-
tive?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2b62c17d-5c05-48d6-ac2b-a3a7c31907f7%2Fddecd590-9668-4363-961c-141368d31ef9%2F3rvtct_processed.png&w=3840&q=75)
Transcribed Image Text:(b) Find a one-sided approximate 95% confidence inter-
val that is a lower bound for #p.
(c) Does it look like the rope-jumping program was effec-
tive?
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