Find the value of the test statistic, \(X ^ { 2 }\), giving your answer to one decimal place.
State, in context, the conclusion that Emily should reach based on the results of her \(\chi ^ { 2 }\) test.
Make one comment on the GCSE performances of 16-year-old students attending Bailey Language School.
Emily's friend, Joanna, used the same data to correctly conduct a \(\chi ^ { 2 }\) test using the \(10 \%\) level of significance.
State, with justification, the conclusion that Joanna should reach.