In: Math
35. The Center for Medicare and Medical Services reported that there were 295,000 appeals for hospitalization and other Part A Medicare service. For this group, 40% of first-round appeals were successful (The Wall Street Journal, October 22, 2012). Suppose 10 firstround appeals have just been received by a Medicare appeals office.
PLEASE SHOW HOW TO COMPUTE ANSWERS IN EXCEL USING EXCEL FORMULAS
a. Compute the probability that none of the appeals will be successful.
b. Compute the probability that exactly one of the appeals will be successful.
c. What is the probability that at least two of the appeals will be successful?
d. What is the probability that more than half of the appeals will be successful?
Hello Sir/ Mam
Given that:
p | 40.00% |
n | 10 |
Now, using
Excel formulas for excel :
FORMULA VIEW
Binomial | |
p | 0.4 |
n | 10 |
x | =C27*C28 |
x | P(x) |
0 | =COMBIN($C$28,B31)*($C$27^B31)*((1-$C$27)^($C$28-B31)) |
1 | =COMBIN($C$28,B32)*($C$27^B32)*((1-$C$27)^($C$28-B32)) |
2 | =COMBIN($C$28,B33)*($C$27^B33)*((1-$C$27)^($C$28-B33)) |
3 | =COMBIN($C$28,B34)*($C$27^B34)*((1-$C$27)^($C$28-B34)) |
4 | =COMBIN($C$28,B35)*($C$27^B35)*((1-$C$27)^($C$28-B35)) |
5 | =COMBIN($C$28,B36)*($C$27^B36)*((1-$C$27)^($C$28-B36)) |
6 | =COMBIN($C$28,B37)*($C$27^B37)*((1-$C$27)^($C$28-B37)) |
7 | =COMBIN($C$28,B38)*($C$27^B38)*((1-$C$27)^($C$28-B38)) |
8 | =COMBIN($C$28,B39)*($C$27^B39)*((1-$C$27)^($C$28-B39)) |
9 | =COMBIN($C$28,B40)*($C$27^B40)*((1-$C$27)^($C$28-B40)) |
10 | =COMBIN($C$28,B41)*($C$27^B41)*((1-$C$27)^($C$28-B41)) |
Output :
x | P(x) |
0 | 0.0060 |
1 | 0.0403 |
2 | 0.1209 |
3 | 0.2150 |
4 | 0.2508 |
5 | 0.2007 |
6 | 0.1115 |
7 | 0.0425 |
8 | 0.0106 |
9 | 0.0016 |
10 | 0.0001 |
Hence,
(a) P(None) = 0.006
(b) P(Exactly one) = 0.0403
(c) P(Atleast 2) = 0.9536
(d) P(More than 5) = 0.1662