Question $5$

The ATO is interested in improving the timeliness of income tax submissions. It was decided to trial a text message reminder, where these are sent out prior to the submission deadline to every person that submitted late in $2022.$ The trial finds $30\%$ of those in the trial submit their tax on time in $2023.$ This is compared to $70\%$ of the non$-$trial population.

Which one of the following can be concluded from the trial: $*$Mandatory

The trial demonstrates the effectiveness of the reminder text message

The trial demonstrates the reminder text message is not effective

From the trial it is unclear whether the text messages were effective

The submission rates are statistically significantly different between the trial and non$-$trial population