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April 21, 2014

April 21, 2014

Posted by **doug** on Sunday, October 24, 2010 at 1:49am.

TABLE 12-7

The director of transportation of a large company is interested in the usage of her van pool. She considers her routes to be divided into local and non-local. She is particularly interested in learning if there is a difference in the proportion of males and females who use the local routes. She takes a sample of a day's riders and finds the following:

Male Female Total

Local 27 44 71

Non-Local 33 25 58

Total 60 69 129

She will use this information to perform a chi-square hypothesis test using a level of significance of 0.05.

(a) Referring to Table 12-7, the test will involve ________ degree(s) of freedom.

A) 1

B) 59

C) 68

D) 128

(b) Referring to Table 12-7, the overall or average proportion of local riders is ________.

A) 1.00

A) 0.01

A) 0.5504

A) 0.55

A) 0.05

(c) Referring to Table 12-7, the expected cell frequency in the Male/Local cell is ________.

A) 33.02

A) 33.00

A) 0.300

A) 0.330

A) 3.302

- Statistic -
**PsyDAG**, Sunday, October 24, 2010 at 10:58amX^2 = Σ [(O-E)^2/E]

Where O = Observed Frequency and E = Expected Frequency

E = (column total*row total)/grand total

(a) (2-1)(2-1) = ?

(b) Local total/grand total = ?

(c) E = ?

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