Statistics
4th Edition
ISBN: 9780393929720
Author: David Freedman, Robert Pisani, Roger Purves
Publisher: Norton, W. W. & Company, Inc.
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Question
Chapter 29.8, Problem 9SRE
(a)
To determine
Identify the investigator who has a higher
(b)
To determine
Identify the investigator who has a higher correlation.
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1. A consumer group claims that the mean annual consumption of cheddar cheese by a person in
the United States is at most 10.3 pounds. A random sample of 100 people in the United States has
a mean annual cheddar cheese consumption of 9.9 pounds. Assume the population standard
deviation is 2.1 pounds. At a = 0.05, can you reject the claim? (Adapted from U.S. Department of
Agriculture)
State the hypotheses:
Calculate the test statistic:
Calculate the P-value:
Conclusion (reject or fail to reject Ho):
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line employees is less than 8.5 hours. A random sample of 25 of the company's assembly line
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hour and the population is normally distributed. At a = 0.01, test the CEO's claim.
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Calculate the test statistic:
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Statistics
21.
find the mean.
and
variance of the
following:
Ⓒ x(t) = Ut +V, and V indepriv. s.t
U.VN NL0, 63).
X(t) = t² + Ut +V, U and V incepires have N (0,8)
Ut
①xt = e UNN (0162)
~ X+ = UCOSTE, UNNL0, 62)
SU, Oct
⑤Xt=
7
where U. Vindp.rus
+> ½
have NL, 62).
⑥Xn = ΣY, 41, 42, 43, ... Yn vandom sample
K=1
Text
with mean zen and variance 6
A psychology researcher conducted a Chi-Square Test of Independence to examine whether there is a relationship between college students’ year in school (Freshman, Sophomore, Junior, Senior) and their preferred coping strategy for academic stress (Problem-Focused, Emotion-Focused, Avoidance). The test yielded the following result:
image.png
Interpret the results of this analysis. In your response, clearly explain:
Whether the result is statistically significant and why.
What this means about the relationship between year in school and coping strategy.
What the researcher should conclude based on these findings.
Chapter 29 Solutions
Statistics
Ch. 29.1 - Prob. 1EACh. 29.1 - Prob. 2EACh. 29.2 - Prob. 1EBCh. 29.2 - Prob. 2EBCh. 29.2 - Prob. 3EBCh. 29.2 - Prob. 4EBCh. 29.2 - Prob. 5EBCh. 29.2 - Prob. 6EBCh. 29.2 - Prob. 7EBCh. 29.2 - Prob. 8EB
Ch. 29.2 - Prob. 9EBCh. 29.3 - Prob. 1ECCh. 29.3 - Prob. 2ECCh. 29.3 - Prob. 3ECCh. 29.3 - Prob. 4ECCh. 29.3 - Prob. 5ECCh. 29.3 - Prob. 6ECCh. 29.3 - Prob. 7ECCh. 29.3 - Prob. 8ECCh. 29.4 - Prob. 1EDCh. 29.4 - Prob. 2EDCh. 29.4 - Prob. 3EDCh. 29.4 - Prob. 4EDCh. 29.4 - Prob. 5EDCh. 29.4 - Prob. 6EDCh. 29.5 - Prob. 1EECh. 29.5 - Prob. 2EECh. 29.5 - Prob. 3EECh. 29.5 - Prob. 4EECh. 29.7 - Prob. 1RECh. 29.7 - Prob. 2RECh. 29.7 - Prob. 3RECh. 29.7 - Prob. 4RECh. 29.7 - Prob. 5RECh. 29.7 - Prob. 6RECh. 29.7 - Prob. 7RECh. 29.7 - Prob. 8RECh. 29.7 - Prob. 9RECh. 29.7 - Prob. 10RECh. 29.7 - Prob. 11RECh. 29.7 - Prob. 12RECh. 29.8 - Prob. 1SRECh. 29.8 - Prob. 2SRECh. 29.8 - Prob. 3SRECh. 29.8 - Prob. 4SRECh. 29.8 - Prob. 5SRECh. 29.8 - Prob. 6SRECh. 29.8 - Prob. 7SRECh. 29.8 - Prob. 8SRECh. 29.8 - Prob. 9SRECh. 29.8 - Prob. 10SRECh. 29.8 - Prob. 11SRECh. 29.8 - Prob. 12SRECh. 29.8 - Prob. 13SRECh. 29.8 - Prob. 14SRECh. 29.8 - Prob. 15SRECh. 29.8 - Prob. 16SRECh. 29.8 - Prob. 17SRECh. 29.8 - Prob. 18SRECh. 29.8 - Prob. 19SRECh. 29.8 - Prob. 20SRECh. 29.8 - Prob. 21SRECh. 29.8 - Prob. 22SRECh. 29.8 - Prob. 23SRECh. 29.8 - Prob. 24SRECh. 29.8 - Prob. 25SRECh. 29.8 - Prob. 26SRECh. 29.8 - Prob. 27SRECh. 29.8 - Prob. 28SRECh. 29.8 - Prob. 29SRECh. 29.8 - Prob. 30SRECh. 29.8 - Prob. 31SRECh. 29.8 - Prob. 32SRECh. 29.8 - Prob. 33SRECh. 29.8 - Prob. 34SRECh. 29.8 - Prob. 35SRECh. 29.8 - Prob. 36SRECh. 29.8 - Prob. 37SRECh. 29.8 - Prob. 38SRECh. 29.8 - Prob. 39SRECh. 29.8 - Prob. 40SRE
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