3. Is age independent of the desire to ride a bicycle? A random sample of 395 pe

Question

3. Is age independent of the desire to ride a bicycle? A random sample of 395 people surveyed. Each person was asked their interest in riding a bicycle (Variable A) a (Variable B). The data that resulted from the survey is summarized in the following their age Variable B (Age) | OBSERVED 18-24) 25-3 3 49 50-64 -- - Total Variable A Yes No Total 194 5357 98 100 100 Is there evidence to conclude, at the 0.05 level, that the desire to ride a bicycle d age? (Stat500 Penn). depends on (Ans ?2statistice: 8.006 ; ?2 critical:115, P-val-0.0406). calculate expected counts from observed counts. Also test for association between political affiliation and opinion on tax reform using sig. level of 0.05. 3. Use the Party Affiliation and Opinion on Tax Reform information in the table below to favor indifferent opposed total 138 83 67 64 84 148 285 215 500 democrat republican 64 total 202 150 favor indifferent opposed total democrat republican total202 150 285 215 500 148 (Ans democrat+favor count- 115.14,x'statistic 22.152, P-val- 0.000)

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1. If p-value is less than alpha then we reject Ho and conclude that there is a dependence between variables.

So, p-value here is .0406 which is less than .05.

And hence, we conclude that desire to ride a bicycle depends on age

2. Same fundamental here, p-value is .000 which is less than alpha of .05

And hence, we conclude that there is association between political affliation and opiniion on tax reforms

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