Question

on a jogging trail, you take a random sample of the speed of 50 joggers and determine that the average speed is 5.3 mph. which statement is true? a you conclude that the average speed of all joggers is close to 5.3 mph. b you conclude that the speed of all joggers on this trail is exactly 5.3 mph. c you conclude that the average speed of all joggers on this trail is close to 5.3 mph. d you conclude that the speed of more than half of the joggers on this trail is less than 5.3 mph.

Explanation:

A sample is used to estimate population - level characteristics. The sample average of joggers' speed on the trail is 5.3 mph. We can only conclude that the average speed of all joggers on this trail is likely close to this sample average, not exactly the same or make assumptions about the speed of more than half of the joggers.

Answer:

C. You conclude that the average speed of all joggers on this trail is close to 5.3 mph