OCR S3 2016 June — Question 2

Exam BoardOCR
ModuleS3 (Statistics 3)
Year2016
SessionJune
TopicChi-squared distribution

2 A random sample of 200 American voters were asked about which political party they supported and their attitude to a proposed new form of taxation. The voters' responses are summarised in the table. Attitude
\cline { 2 - 5 }In favourNeutralAgainst
\cline { 2 - 5 }Democrat581616
\cline { 2 - 5 } PartyIndependent25411
\cline { 2 - 5 }Republican172033
\cline { 2 - 5 }
\cline { 2 - 5 }
Carry out a \(\chi ^ { 2 }\) test, at the \(1 \%\) level of significance, to investigate whether there is an association between party supported and attitude to the proposed form of taxation.