Construct a 99% confidence interval for the mean number of letter sounds identified in one minute. Round the answers to two decimal places. A 99% confidence interval for the mean number of letter sounds identified in one minute is <<μ
Construct a 99% confidence interval for the mean number of letter sounds identified in one minute. Round the answers to two decimal places. A 99% confidence interval for the mean number of letter sounds identified in one minute is <<μ
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Sound it out: Phonics is an instructional method in which children are taught to connect sounds with letters or groups of letters. A sample of
145
first-graders who were learning English were asked to identify as many letter sounds as possible in a period of one minute. The average number of letter sounds identified was
34.13
with a standard deviation of
23.95
.
Part: 0 / 2
0 of 2 Parts Complete
Part 1 of 2
(a) Construct a
99%
confidence interval for the
A
99%
<<μ
|
Expert Solution
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Step 1: Given Information:
It is given that
Sample mean = 34.13
Sample std. deviation = 23.95
Sample size = 145
Confidence level = 99%
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