The scale on a map is 1cm: 7km. If two cities are 15cm apart on the map, what is the actual distance between the cities?

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Amajor grocery store chain is trying to cut down on waste. currently, they get peaches from two different distributors, whole fruits and green grocer. out of a two large shipments, the manager randomly selects items from both suppliers and counts the number of items that are not sell-able due to bruising, disease or other problems. she then makes a confidence interval. is there a significant difference in the quality of the peaches between the two distributors? 95% ci for pw-pg: (0.064, 0.156)

Which will form a composite function?