5 Hal designs a 4-edged spinner with edges labelled 1, 2, 3 and 4. He intends that the probability that the spinner will land on any edge should be proportional to the number on that edge. He spins the spinner 20 times and on each spin he records the number of the edge on which it lands. The results are shown in the table.
| Edge number | 1 | 2 | 3 | 4 |
| Frequency | 3 | 7 | 4 | 6 |
Test at the \(10 \%\) significance level whether the results are consistent with the intended probabilities.