1. Give a 90% confidence interval for the mean posttest score for all BACC students 2. Find a 95% confidence interval for the difference in the mean posttest scores for BACC and traditionally taught students.
1. Give a 90% confidence interval for the mean posttest score for all BACC students 2. Find a 95% confidence interval for the difference in the mean posttest scores for BACC and traditionally taught students.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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question 4 Start from 1 pagr and then second page. i need this question solution urgently
Transcribed Image Text:• Exercise 4
Historically, biology has been taught through lectures, and assesument of
Transcribed Image Text:learning was accomplished by testing vocabulary and memorized facts.
A teacher-devoloped new curriculum, Biology: A Community Content
(BACC), is standards based, activity oriented, and inquiry centered. Stu-
dents taught using the historical and new methods were tested in the
traditional sense on biology concepts that featured biological knowledge
and process skills. The results of a test on biology concepts were published
in The American Biology Teacher and are given in the following table.
Standard
Sample
Size
Mean
Deviation
5.59
13.38
14.06
372
Pretest: all BACC classes
Pretest. all traditional
368
5.45
Posttest: all BACC classes
18.50
365
8.03
Posttest: all traditional
16.50
298
6.96
1. Give a 90% confidence interval for the mean posttest score for all
BACC students
2. Find a 95% confidence interval for the difference in the mean posttest
scores for BACC and traditionally taught students.
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