Top Posters
Since Sunday
10
s
5
j
4
s
4
W
3
a
3
H
3
s
3
a
3
o
3
K
3
m
3
New Topic  
qwertybio qwertybio
wrote...
Posts: 69
Rep: 0 0
A month ago
To study the effect of soothing music on a person’s blood pressure, two random samples of 220 adults were taken. One sample (sample 1) listened to soothing music for 5 min prior to having their blood pressure taken, while the other sample (sample 2) sat in silence. From previous studies, it was found that both populations have a standard deviation of 39.18. The average systolic blood pressure from the music sample was 114.5. The average systolic blood pressure from the silent sample was 122.8. Construct a 98% confidence interval on the difference in population mean blood pressures (music – silent).


(–14.4448, –2.1552)



(–17.9223, 1.3222)



(–16.9903, 0.3903



(–15.6219, -0.9781)

Textbook 

Introductory Statistics: A Problem-Solving Approach


Edition: 3rd
Author:
Read 5 times
1 Reply
Replies
Answer verified by a subject expert
naderaidenaderaide
wrote...
Posts: 70
Rep: 0 0
A month ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here

(–16.9903, 0.3903



1

Related Topics

qwertybio Author
wrote...

A month ago
You make an excellent tutor!
wrote...

Yesterday
Thanks
wrote...

2 hours ago
Correct Slight Smile TY
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  308 People Browsing
 470 Signed Up Today
Related Images
  
 782
  
 179
  
 215