Question

the reading speed of second grade students in a large city is approximately​ normal, with a mean of 89 words per minute​ (wpm) and a standard deviation of 10 wpm. Complete parts​ (a) through​ (f).

What is the probability a randomly selected student in the city will read more than 95 words per​ minute?

Answer 1

µ = 89

sd = 10

a)

                            

                             = P(Z > 0.6)

                             = 1 - P(Z < 0.6)

                             = 1 - 0.7257

                             = 0.2743 (ans)