Use a sample n= 840 , p = 0.25, and a confidence level to construct a confidence interval estimate of the population proportion ,p.

The confidence interval would be (0.221, 0.279).

Step-by-step explanation:

Since we have given that

n = 840

p = 0.25

q = 1 - p =

Let 95% level confidence, z = 1.96

Margin of error is given by :

So, confidence interval would be

Hence, the confidence interval would be (0.221, 0.279).

idkit the do u know da way and ligma consumed ninja

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."