That was quick, ty.

My problem question is:

Of 54 bank customers depositing a check, 17 received some cash back.

(a) Construct a 90% conf. int. for the proportion of all depositors who ask or cash back.

I am unfamiliar with the scientific cal. and I am having a problem trying to figure out how to put in the formula.

Thank you

Guest Oct 26, 2019

#2**+1 **

Yes, what HoldMyBeer said. I can most likely solve the problem if I knew what a 90% conf. int. was tho... My own stupidity I suppose

ThatOnePerson Oct 26, 2019