The Communication and Publicity Committee in a certain school took a sample of 10 letters of communication. The grammatical lapses in each letter were counted and recorded as shown below. 16, 11, 9, 12, 15, 7, 2, 6, 6, 10 a.) Calculate the sample mean b.) Compute for the sample standard deviation c.) Construct a 90% confidence interval for the population mean of grammatical errors in the communication letters circulated in the institution
The Communication and Publicity Committee in a certain school took a sample of 10 letters of communication. The grammatical lapses in each letter were counted and recorded as shown below. 16, 11, 9, 12, 15, 7, 2, 6, 6, 10 a.) Calculate the sample mean b.) Compute for the sample standard deviation c.) Construct a 90% confidence interval for the population mean of grammatical errors in the communication letters circulated in the institution
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
Related questions
Question
The Communication and Publicity Committee in a certain school took a sample of 10 letters of communication. The grammatical lapses in each letter were counted and recorded as shown below. 16, 11, 9, 12, 15, 7, 2, 6, 6, 10
a.) Calculate the sample mean
b.) Compute for the sample standard deviation
c.) Construct a 90% confidence interval for the population mean of grammatical errors in the communication letters circulated in the institution
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 4 steps with 3 images
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
College Algebra (MindTap Course List)
Algebra
ISBN:
9781305652231
Author:
R. David Gustafson, Jeff Hughes
Publisher:
Cengage Learning
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
College Algebra (MindTap Course List)
Algebra
ISBN:
9781305652231
Author:
R. David Gustafson, Jeff Hughes
Publisher:
Cengage Learning