Mr. Tan is a research student and his research focus is to examine the impact of Covid-19 on household electricity consumption. He hypothesised that the average monthly electricity bill in a household has increased more than $5 during the Covid-19 pandemic. In order to test his hypothesis, he collected the electricity bill data in 50 households in May 2020 when Singapore was during the circuit breaker period. Mr. Tan also found that the mean and standard deviation of electricity bill in a household in May 2019 are $26 and $7, respectively.

Using appropriate charts and numerical measures, develop a summary report to address Mr Tan's hypothesis. You are expected to provide interpretation to the charts and numerical measures. You are not required to do any further inferential analysis. The word limit is 300 words. Please indicate the word count at the end of your