Final exam scores in a statistics class were normally distributed with a μ = 65 and a standard deviation σ = 5. What is the probability that a randomly selected student will score 70 or higher?

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

1,150 give brainliest

step-by-step explanation

2r= 2300

r =1150

mark other person brainliest

you cant answer this dummy

step-by-step explanation: