Babcock and Marks (2010) reviewed survey data from 2003-2005, and obtained an average of u = 14 hours per week spent studying by full-time students at 4-year colleges in the United States. To determine whether this average has changed in the past 10 years, researcher selected a sample of n = 64 of today's college students and obtained an average of M = 12.5 hours. If the standard deviation for the distribution is o = 4.8 %3D %3D hours per week, does this sample indicate a significant change in the number of hours spent studying? Use a two-tailed test with a = .05.
Babcock and Marks (2010) reviewed survey data from 2003-2005, and obtained an average of u = 14 hours per week spent studying by full-time students at 4-year colleges in the United States. To determine whether this average has changed in the past 10 years, researcher selected a sample of n = 64 of today's college students and obtained an average of M = 12.5 hours. If the standard deviation for the distribution is o = 4.8 %3D %3D hours per week, does this sample indicate a significant change in the number of hours spent studying? Use a two-tailed test with a = .05.
MATLAB: An Introduction with Applications
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![homework 4 - Word
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O Tell me what you want to do...
AaBbCcDc AaBbCcDc AaBbC AABBCCC AaB AaBbCcC AaBbCcD AaBbCcD AaBbCcD AaBbCe
I Normal T No Spac. Heading 1 Heading 2
Subtītle Subtle Em.. Emphasis Intense E.
Title
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Paragraph
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4.
6.
From Cohen:
Chapter 4a q.11 (p. 114);
Chapter 4b, q. 6a, b. (p. 128).
Also, solve the following.
Babcock and Marks (2010) reviewed survey data from
2003-2005, and obtained an average of u = 14 hours
per week spent studying by full-time students at 4-year
colleges in the United States. To determine whether this
average has changed in the past 10 years, researcher
selected a sample of n = 64 of today's college students
and obtained an average of M = 12.5 hours. If the
standard deviation for the distribution is o = 4.8
%3D
I
%3D
%3D
hours per week, does this sample indicate a significant
change in the number of hours spent studying? Use a
two-tailed test with a = .05.
82°F Partly sunny ^ g
al
HP All-in-One
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Transcribed Image Text:homework 4 - Word
Mailings
Review
View
O Tell me what you want to do...
AaBbCcDc AaBbCcDc AaBbC AABBCCC AaB AaBbCcC AaBbCcD AaBbCcD AaBbCcD AaBbCe
I Normal T No Spac. Heading 1 Heading 2
Subtītle Subtle Em.. Emphasis Intense E.
Title
Suois
Paragraph
Styles
4.
6.
From Cohen:
Chapter 4a q.11 (p. 114);
Chapter 4b, q. 6a, b. (p. 128).
Also, solve the following.
Babcock and Marks (2010) reviewed survey data from
2003-2005, and obtained an average of u = 14 hours
per week spent studying by full-time students at 4-year
colleges in the United States. To determine whether this
average has changed in the past 10 years, researcher
selected a sample of n = 64 of today's college students
and obtained an average of M = 12.5 hours. If the
standard deviation for the distribution is o = 4.8
%3D
I
%3D
%3D
hours per week, does this sample indicate a significant
change in the number of hours spent studying? Use a
two-tailed test with a = .05.
82°F Partly sunny ^ g
al
HP All-in-One
REDESIGNED. RELIABLE.
READY FOR YOU
New, colorful ripple
pattern
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