In a survey, 29 people were asked how much they spent on their child's last birthday gift. The resu were roughly bell-shaped with a mean of $49 and standard deviation of $6. Construct a çonfidenc interval at a 80% confidence level. Give your answers to one decimal place. 土 Interpret your confidence interval in the context of this problem.
In a survey, 29 people were asked how much they spent on their child's last birthday gift. The resu were roughly bell-shaped with a mean of $49 and standard deviation of $6. Construct a çonfidenc interval at a 80% confidence level. Give your answers to one decimal place. 土 Interpret your confidence interval in the context of this problem.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
Related questions
Topic Video
Question
100%
Expert Solution
Step 1
- Given Information :
In a survey , 29 people were asked how much they spent on their child’s birthday gift . The result were roughly bell-shaped with a mean of $49 and standard deviation of $6 .
The provided sample mean is and the sample standard deviation is . The size of the sample is and the required confidence level is 80%.
At 80% C.I. , The number of degrees of freedom are , and the significance level is .
Based on the provided information, the critical t-value for and degrees of freedom is .
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, probability and related others by exploring similar questions and additional content below.Recommended textbooks for you
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON