Stats q.

rofl wtf do we have 2 do?

what the fuck is this?

Ooh, I should know that, but I forgot all my stats. Sorry.

Laplace transforms I can do, double integrals I can do, statistics no.

P = normalcdf(a,b,c,d)

normalcdf(a,b,c,d) explained:

a = left border
b = right border
c = average (normal distribution)
d = standard deviation

use your calculator for this.

Integrate the probability density function from 2.88 to x, then find x in the resulting equation.

x = 6.6

S = 4
mu = -3
x1 = 3
x2 = 6.5
x2 > x1

for x1:

Z1 = (3 -(-3))/4 = 6/4 = 3/2 = 1.5

for x2:

Z2 = (6.5 -(-3))/4 = 9.5/4 = 2.375

P1 = 0.933
P2 = 0.9911~

P2 - P1 = 0.9911 - 0.933 = 0.0581

hope i didnt get anything wrong
since space on the graph = probability, removing P1 (stuff left of the smaller value) from P2 (stuff left from the higher value) makes sense

math ftw

(this is assuming you need the probability, which is probably what the question is asking u for..)

more math questions please!

Crossfire 3.0
A Math Community

and the solution in excel: NORMINV(NORMDIST(2.88,-3,4,TRUE) + 0.0626,-3,4) = 6.603

i was tired, lets just say that :D