A researcher wants to examine the impacts of COVID-19 lockdown on the number of meetings an average worker attended by videoconferencing. He expects that the number of such meetings is higher after the lockdown. He collects data on the number of such meetings an average worker attended in the month before and after the lockdown in 16 cities. A portion of data is shown below: City Before After 1 17 20 2 13 3 10 4 4 2237 19 5 16 15 6 8 24 7 5 15 8 16 13 9 16 18 10 5 13 11 11 9 12 9 15 13 9 22 14 15 16 456 7 11 9 18 9 6 https://moodle.uleth.ca/pluginfile.php/273671/question/questiontext/445054/17/1530215/Ch10-135.xlsx a. State the null and alterative hypotheses to test the researcher's expectation. b. Assuming the difference in number of meetings is normally distributed, calculate the value of the test statistic and the p- value. c. At the 5% significance level, do the sample data support the researcher's expectation? Explain.