SOLUTION: I need some help with these questions that I do not understand. Please help!
A) Find the binomial probability P(x=5), where (n=13) and p=0.70.
B) Set up, without solving, the b
Algebra.Com
Question 525390: I need some help with these questions that I do not understand. Please help!
A) Find the binomial probability P(x=5), where (n=13) and p=0.70.
B) Set up, without solving, the binomial probability P(x is at most 5) using probability notation.
C) How would you find the normal approximation to the binomial probability P(x=5) in part A? Please show how you would caculate u ando in the formula for the normal approximation to the binomial, and show the final formula you would use without going through all the caculations.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
I need some help with these questions that I do not understand. Please help!
A) Find the binomial probability P(x=5), where (n=13) and p=0.70.
P(x=5) = 13C5(0.7)^5*0.3^8 = 0.0142
--------------------------------------------
B) Set up, without solving, the binomial probability P(x is at most 5) using probability notation.
P(x >= 5) = 1 - P(0<= x <=4) = 1-0.0034 = 0.9966
--------------------------------------------
C) How would you find the normal approximation to the binomial probability
P(x=5) in part A? Please show how you would caculate u and o in the formula for the normal approximation to the binomial, and show the final formula you would use without going through all the caculations.
u = np = 13*0.7 = 9.1
sigma = sqrt(npq) = sqrt(9.1*0.3) = 1.6523
-----------------------------------
Switching from Binomial to Normal:
P(x = 5) = P(4.5 <= x <= 5.5)
z(4.5) = (4.5-9.1)/1.6523 = -2.7840
z(5.5) = (5.5-9.1)/1.6523 = -2.1788
-----------------------
P(4.5 <= x <= 5.5) = P(-2.7840<= z <= -2.1788) = 0.0120
======================================================
Cheers,
Stan H.
=============
RELATED QUESTIONS
I am in need of some help, this is my first statistics class and we are in the second... (answered by stanbon)
1. Express the confidence interval (0.064,0.148) in the form of
^p-E (answered by rothauserc)
Could someone please help me to understand this problem. I am not sure how to go about... (answered by stanbon)
Help....I am completely lost and do not know where to begin with this question...please,... (answered by stanbon)
. A student is taking a 5 question True-False quiz but he has not been doing any work in (answered by Theo,jsmallt9)
ples please someone....I NEED HELP WITH THIS QUESTION I HAVE SUBMITTED IT SEVERAL TIMES... (answered by Theo)
hello i need help with a some logic proofs that i do not... (answered by solver91311)
I need HELP: Given a binomial distribution with n=20 and p=0.76, would the normal... (answered by Edwin McCravy)
I need help solving this problem
Suppose that x has a binomial distribution with n =
15 (answered by Boreal)