Table 1 shows the number of deaths due to Covid-19 in one country during the period of first 10 days of October 2021 and November 2021. Answer the following questions without using any software. Table 1 Day October 2021 November 2021 1 121 63 109 70 3 118 46 76 64 117 47 105 54 132 35 78 58 9 74 78 10 64 59 a) A researcher believes that the average number of deaths has decreased in November 2021 as compared to October 2021. Conduct an appropriate hypothesis test to help the researcher to decide whether there is a decrease in the average number of deaths using