Suppose that the distribution of typing speed in words per minute (wpm) for experienced typists using a new type of spilt keyboard can be approximated by a normal curve with mean 68 wpm and standard deviation 17 wpm A) what is is the probability that a randomly selected typists speed is at most 68 wpm?

B) What is the probability that a randomly selected typists speed is less than 68 wpm?

C) what is the probability that a randomly selected typists speed is between 34 and 85 wpm?

300pi

step-by-step explanation:

p ÷ r = tan(x)

step-by-step explanation:

given that there is a figure below shows a right triangle: a right triangle is shown with hypotenuse equal to q units and the length of the legs equal to p units and r units.

graph is missing so i will create the graph as per given information.

the angle between the legs having lengths p units and q units is y degrees. the angle between the legs having lengths r units and q units is x degrees.

now we need to find about what is p ÷ r equal to.

so we can use trigonometric ratio tan(x)=[altitude]/[base] to find the value of p ÷ r, because p is the altitude and r is the base.

p ÷ r=tan(x)

hence final answer is p ÷ r=tan(x).