SOLUTION: please help...i've done several problems but i'm stuck on a couple... Suppose that 30% of the vehicles in a mall parking lot belong to emplyees. Nine vehicles are chosen at rando

Question 322068: please help...i've done several problems but i'm stuck on a couple...
Suppose that 30% of the vehicles in a mall parking lot belong to emplyees. Nine vehicles are chosen at random. find the probability that:
exactly 3 belong to mall employees
at most 3 belong to mall employees
at least 7 belong to mall emplyees
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Suppose that 30% of the vehicles in a mall parking lot belong to emplyees.
Nine vehicles are chosen at random.
find the probability that:
exactly 3 belong to mall employees = 9C3*0.3^3*0.7^6 = 0.2668
-----------------------------
at most 3 belong to mall employees = binomcdf(9,0.3,3) = 0.7297
-----
at least 7 belong to mall emplyees = 1 - binomcdf(9,0.3,6) = 0.0043
=======================
Cheers,
Stan H.

RELATED QUESTIONS
Hello, I am stuck on this question Please show work A rectangular parking lot has a... (answered by solver91311)

On my homework I have a couple of problems that have to do with conic sections. I have... (answered by scott8148)

Hi I have a word problem that I could use some help on Please. I thank you in advance... (answered by jorel1380)

I’m didn’t find an exact word for word topic so sorry if I chose the wrong one.... (answered by solver91311,josgarithmetic,ikleyn)

You can afford a $1300 per month mortgage payment. You've found a 30-year loan at 7%... (answered by Theo)

I am very lost please help! Four students divided the task of surveying the types of... (answered by stanbon)

Hi I need help on this question I'm struggling with. Thank you in advance! The... (answered by FrankM)

Hi, I need help solving this math word problem please. The average number of vehicles... (answered by KMST)

40 cars and 24 trucks were in a parking lot. What percent of the vehicles in the parking... (answered by math_helper,MathLover1,MathTherapy)