How could I answer all parts to this question please?

I am re-asking this question and this is an example question provided by my professor in preparation for an upcoming examination next month. It is not something I can submit as a piece of work. If you can answer the questions and provide me with explanations that I can use to study from, I would highly appreciate it. Thank you.

C11: Pandemic impacts on daily activity [19 marks] The COVID-19 pandemic has fundamentally changed the way we all live and work, and Professor Fletcher wanted to find out how it had altered the daily activity level of professors at University of Waterloo. Due to the lockdown, the only data available were daily averages of the distance walked {in km] provided by the Health App on the professor's smartphone from a random sample of weekdays in each year. Using these data, he investigates whether the daily activity of professors at Waterloo decreased, on average, in 2020 compared to 2019. The distributions of the sample data for 2020 (grey filled bars] and 2019 (red unfilled bars) are shown in Fig.1, and the information from the statistical test is presented in the tables below. 15 Frequency 'ID . WW I I I I 0 2 4 6 a 10 Daily distance Waiked (km) Figure 1: Histograms showing average daily distance walked (u nits km] by Professor Fletcher from a random sample of 47 weekdays in 2019 (red unfilled bars] and 55 weekdays in 2020 {grey lled bars). a) Write 1-2 sentences describing the main similarities and differences in the distribution of daily distances walked in 2019 and 2020. [5 marks] b) Assuming that the Normal Enough Condition is satisfied for both distributions, justify the selection of a statistical method that is most appropriate to answer this question. [3 marks] c] Write an appropriate null and alternative hypothesis for this question. [2 marks] d} Using the following output from statistical software, calculate the test statistic and report an approximate P-value for this test. Evaluate the strength of evidence against the null hypothesis in part c], assuming a typical alpha level. [5 marks] ' . . = 2.92 52020: 1-49 112020 = 55 S " ".. =0.299 df = 96 e] Write an appropriate conclusion to answer the Professor's research question. [2 marks] f) To what extent is it reasonable to draw conclusions about all professors at Waterloo from this dataset? Are there any forms of bias that could invalidate the findings? [2 marks]