atistics (Fall 2022) sec. 01 A) If the distribution of the weights of the students is bell shaped distribution with mean so kj and sundar deviation of 8 Kg, then about 99.79 of the students weights between what two values? (4pointsy B) If the distribution of the heights of the students is bell-shaped distribution. Furthermore, about 95% of the students between 160 cm and 174 cm, what is the mean and the standard deviation of the students heighis? (5 points) C) A researcher wanted to conduct a research to know the average family size in Dubai, The researcher divided Dubai into 40 geographical areas and selected a randomly 4 areas, then ask all the families in these areas, Which type of the sampling method the researcher used? (5 points)