Help me please Data Gathering techniques
A student council wants to know whether students would like the council to sponsor a mid-winter dance or a mid-winter carnival this year, Classify each sampling method and explain your classification. .​

The distance between two cities is 368 miles. if the scale on the map is 1/4 inch=23 miles, what is the distance between the cities on the map?

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

The anwser cause i do not understand just plez