Top Posters
Since Sunday
A
6
j
6
c
5
m
5
C
5
d
5
s
5
n
4
i
4
d
4
d
4
J
4
New Topic  
NeuroJuice NeuroJuice
wrote...
Posts: 141
Rep: 0 0
2 weeks ago
Use the following to answer the questions below:

On August 8, 2012, the national average price for a gallon of regular unleaded gasoline was $3.63. The prices for a random sample of gas stations in the state of Illinois were recorded at that time. The mean price for the sampled gas stations was $3.975, with standard deviation $0.2266. A boxplot of the data is provided.

A horizontal boxplot depicts the results of the gas price for 10 random samples. The horizontal axis is labeled, Gas Price and has markings from 3.6 to 4.3 in increments of 0.1. The whiskers of the box plot range from 3.65 to 4.3 and the box ranges from 3.75 to 4.15 with a median at 3.96. All values are approximate.


Construct a 95% confidence interval for the mean gas price in Illinois (on August 8, 2012). Round your margin of error to three decimal places.

▸ 3.813 to 4.137

▸ 3.807 to 4.143

▸ 3.822 to 4.128

▸ 3.791 to 4.159
Textbook 
Statistics: Unlocking the Power of Data

Statistics: Unlocking the Power of Data


Edition: 3rd
Authors:
Read 11 times
1 Reply
Replies
Answer verified by a subject expert
dmp7474dmp7474
wrote...
Posts: 134
Rep: 5 0
2 weeks ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

NeuroJuice Author
wrote...

2 weeks ago
Thank you, thank you, thank you!
wrote...

Yesterday
You make an excellent tutor!
wrote...

2 hours ago
Good timing, thanks!
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  802 People Browsing
 110 Signed Up Today
Related Images
  
 89
  
 96
  
 83
Your Opinion
Which industry do you think artificial intelligence (AI) will impact the most?
Votes: 380