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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
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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question 4 Start from 1 pagr and then second page. i need this question solution urgently

• Exercise 4 Historically, biology has been taught through lectures, and assesument of
Transcribed Image Text:• Exercise 4 Historically, biology has been taught through lectures, and assesument of
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.
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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