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May 30, 2015

Homework Help: Statistics

Posted by Me on Saturday, August 17, 2013 at 9:19am.

A simple random sample of cars in a city was categorized according to fuel type and place of manufacture.

domestic foreign
gasoline 146 191
diesel 18 26
hybrid 51 79

Are place of manufacture and fuel type independent?

If the two variables were independent, the chance that a sampled car is a domestic gasoline fueled car would be estimated to be about
0.0362 0.0499 0.2775 0.3820 0.5

If the two variables were independent, the expected number of foreign gas/electric hybrids would be estimated to be _______. (Please keep at least two decimal places)

Degrees of freedom =
1 2 3 4

The chi-square statistic is 0.6716. The test therefore concludes that the two variables are
independent
not independent

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