The table below cross-classifies U.S. adults (n=1704) by sex (male or female) andwhether they say they are afraid to walk at night in their neighborhood (yes or no).Questions 4-8 refer to this table.AFRAID TO WALK AT NIGHT?YesNoTotalMaleFemale173598771540393566933Total11381704Source: 2014 GSSWhat is the null hypothesis for a chi-square test of the association between sex andfear of walking at night?IT =Но: И2-И-0 (or Ho: и1-И2)Ho : sex and fear of walking at night are statistically independentHo:sex and fear of walking at night are statistically dependent

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Description: The table below cross-classifies U.S. adults (n=1704) by sex (male or female) andwhether they say they are afraid to walk at night in their neighborhood (yes or no).Questions 4-8 refer to this table.AFRAID TO WALK AT NIGHT?YesNoTotalMaleFemale173598

The table shows U.S. adults by sex and whether they say they are afraid to walk at night in their…

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Statistics

aduits by sex (male female) ana whether they say they are afraid to walk at night in their neighborhood (yes or no). Questions 4-8 refer to this table. AFRAID TO WALK AT NIGHT? Yes No 598 Total Male Female Total Source: 2014 GSS 173 771 933 393 566 540 1138 1704 What is the null hypothesis for a chi-square test of the association between sex and fear of walking at night?

aduits by sex (male female) ana whether they say they are afraid to walk at night in their neighborhood (yes or no). Questions 4-8 refer to this table. AFRAID TO WALK AT NIGHT? Yes No 598 Total Male Female Total Source: 2014 GSS 173 771 933 393 566 540 1138 1704 What is the null hypothesis for a chi-square test of the association between sex and fear of walking at night?

MATLAB: An Introduction with Applications

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Concept explainers

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

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Question

The table below cross-classifies U.S. adults (n=1704) by sex (male or female) and
whether they say they are afraid to walk at night in their neighborhood (yes or no).
Questions 4-8 refer to this table.
AFRAID TO WALK AT NIGHT?
Yes
No
Total
Male
Female
173
598
771
540
393
566
933
Total
1138
1704
Source: 2014 GSS
What is the null hypothesis for a chi-square test of the association between sex and
fear of walking at night?
IT =
Но: И2-И-0 (or Ho: и1-И2)
Ho : sex and fear of walking at night are statistically independent
Ho:sex and fear of walking at night are statistically dependent

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