Draw a sketch of the sampling distribution for the sample mean time spent by students at the CSB. Remember, the sample size is 70, the true population mean is 1 hour (µ = 1 hour) and
the population standard deviation is 1 (σ = 1). Indicate the area that you are interested in on
this sketch (i. e., the area that includes all ‘samples of size 70 with a sample mean exceeding
1.1 hours’

the answer is 48m^2!

step-by-step explanation:

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

answer: i wpould go with c

step-by-step explanation: