In a random sample of 63 women at a company, the mean salary is $48,902 with a standard deviation of $5270. in a rando sample of 50 men at the company the mean salary is $53,454 with a standard deviation of $4677. which interval in the 95% confidence interval for the difference between the mean salaries of all women and men at the company? a. 3614.81 , 5489.19 b. 2715.11 , 6388.89 c. 4083,40 , 5020.60 d. 2134.05 , 6969.95

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step-by-step explanation:

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- "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."