Матеріали курсу STA1010 - Statistical methods for science - S2 2025 та відповіді на тести | learning.monash.edu

Interpret the results of the chi-square test at the 5% significance level.

The Book Industry Study Group, Inc., performs sample surveys to obtain information on characteristics of book readers. A book reader is defined to be one who read one or more books in the six months prior to the survey; a non-book reader is defined to be one who read newspapers or magazines but no books in the six months prior to the survey; a nonreader is defined to be one who did not read a book, newspaper, or magazine in the six months prior to the survey. The following data were obtained from a random sample of 1429 persons 16 years old and over.

χ² = 114.534; P-value = 2.287 × 10^-22

There is not sufficient evidence to reject the null hypothesis and conclude that income and classification are independent.

There is not sufficient evidence to reject the null hypothesis and conclude that income and classification are dependent.

There is sufficient evidence to reject the null hypothesis and conclude that income and classification are dependent.

100%

There is sufficient evidence to reject the null hypothesis and conclude that income and classification are independent.

There is sufficient evidence to reject the null hypothesis and conclude that the classifications are not uniformly distributed for each income bracket.

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	Pet	Ownership
Patient status	No	Yes
Alive	24	50
Dead	10	5

	Pet	Ownership
Patient status	No	Yes
Alive	27	50
Dead	11	5

	Pet	Ownership
Patient status	No	Yes
Alive	[x]	50
Dead	10	5

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STA1010 - Statistical methods for science - S2 2025

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