Question

PLZ HELP!!

Answer 1

@jim_thompson5910 can u help with this. How to i start solving this?

Answer 2

the confidence level is 91%

so

alpha = 1-CL

alpha = 1-0.91

alpha = 0.09

Answer 3

divide that in half to get

alpha/2 = 0.09/2

alpha/2 = 0.045

Answer 4

So you need to find the value of k that satisfies this equation

P(Z > k) = 0.045

Answer 5

remember how to do this?

Answer 6

yah i think i got it now. ^_^

Answer 7

ok great