A school knows that 10% of its students are left-handed. What is the probability that there will be between 33 and 45 left-handed students in a

randomly selected group of 400? Use your calculator and this formula: Plasx

sb) = binomcdf(n, p,b) - binomcdf(n, p,a- 1). Round your answer to three

decimal places.

A. 0.138

B. 0.821

C. 0.718

O D. 0.103

- "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."

-9

step-by-step explanation:

b if for most of the graph

d if y intercept

step-by-step explanation:

b. f(x) = –√x + 3this is the correct answer