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Chapter 11: Q.36 (page 656)
The degree of freedom is.
Given data:
The number of columns is and the number of rows is
To calculate the degree of freedom is
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Determine the appropriate test to be used in the next three exercises.
A personal trainer is putting together a weight-lifting program for her clients. For a -day program, she expects each client to lift a specific maximum weight each week. As she goes along, she records the actual maximum weights her clients lifted. She wants to know how well her expectations met with what was observed.
The standard deviation of heights for students in a school is . A random sample of students is taken, and the standard deviation of heights of the sample is . A researcher in charge of the study believes the standard deviation of heights for the school is greater than .
To find the value of.
The expected percentage of the number of pets students have in their homes is distributed (this is the given distribution for the student population of the United States) as in Table 11.12.
A random sample of students from the Eastern United States resulted in the data in Table 11.13.
At the significance level, does it appear that the distribution “number of pets” of students in the Eastern United States is different from the distribution for the United States student population as a whole? What is the p-value?
When does the chi-square curve approximate a normal distribution?
Read the statement and decide whether it is true or false.
In a goodness of fit test, if the p-value is , in general, do not reject the null hypothesis
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