You are employed as a behavioural change specialist at the City of Cape Town. You are tasked with implementing, monitoring, and evaluating a water usage awareness campaign. You randomly select a sample of eight households in a particular residential area, and measure their daily water usage $($in litres$)$ both before and after exposure to the campaign. What would your feedback be to the Director of Water Affairs regarding the impact of the awareness campaign on the amount of water used per day by households? The results are given in the table below: DAILY WATER USAGE $($LITRES$)$ Household Before Campaign After Campaign $12982942254251322422642102045227223626225572412298280265$ Perform an appropriate hypothesis test at the $5\%$ significance level to determine whether exposure to the campaign has a significant impact on daily water usage by households. Show all calculations. Include the following in your hypothesis test: a$.$ State the null and alternate hypotheses b$.$ State the design requirements and assumptions $($assume assumptions have been met$)$ c$.$ State the decision rule d$.$ Calculate the value of the test statistic and make a decision e$.$ State the conclusion f$.$ Calculate and interpret effect size, if appropriate