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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

Problem 1P

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Question

Large samples of women and men are obtained, and the hemoglobin level is measured in each subject. Here is the
95% confidence interval for the difference between the two population means, where the measures from women
correspond to population 1 and the measures from men correspond to population 2:
- 1.76 g/dL < µ, - H2 < - 1.62 g/dL. Complete parts (a) through (c) below.
a. What does the confidence interval suggest about equality of the mean hemoglobin level in women and the
mean hemoglobin level in men?
Because the confidence interval
includes
95% , it appears that there
is
a significant difference
between the mean level of hemoglobin in women and the mean level of hemoglobin in men.
(Type an integer or a decimal. Do not round.)
b. Write a brief statement that interprets that confidence interval.
O A. There is 95% confidence that the interval from - 1.76 g/ dL to - 1.62 g/ dL actually contains the value
of the difference between the two population means (H1 -42)
O B. There is 95% confidence that the interval from - 1.76 g/ dL to - 1.62 g/ dL does not contain the value
of the difference between the two population means (u,-H).
Vi
(1,1)
More
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