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In: Statistics and Probability

hi chapter 12 Q3: here is the question: modify the spreadsheet shown in Fig 12.9 to...

hi chapter 12 Q3: here is the question:

  1. modify the spreadsheet shown in Fig 12.9 to include the cash flows in this account. If the company deposits $3m in this account every month, what is the probability that the account will have insufficient funds to pay claims at some point during the year?

how do i calculate beginning balance from month two knowing month one is $2,500,000

Solutions

Expert Solution

Let,

Month 1 2 3 4 5 6 7 8 9 10 11 12
Seasonal Factor 0.80 0.85 0.87 0.92 0.93 1.15 1.20 1.18 1.03 0.95 0.98 1.14

The aim is to modify the data of Hungry Dawg Restaurants and calculate the probability that the account will have insufficient funds to pay claims during the year.

Initial Condition Assumption:
Number of Covered Employees 18,533 Increasing 2% per month
Average Claim for Employees $250 Increasing 1% per month
Amount contributed over Employee $125 Constant

To implement the formula to generate a random number of employees covered by the health plan.

Use the MS Excel function: PsiUniform ()

The change in the number of employees from one month to next can vary between a 2% increase and 1% increase.


In order to obtain total claims use the formula:

Total Claims = Number of Employees * Average claim per employees * Seasonal factor

In order to obtain Company Cost use the formula:

Company Cost = Total Claims - Employee Contribution

In order to obtain ending balance use the formula:

Ending Balance = Beginning Balance + Company Contribution - Company Cost

Use MS Excel function, PsiOutput:

Month Beginning Number of Employee Average claim Seasonal Total Company Company Ending
Balance Employees Contribution per Employee Factor Claims Cost Contribution Balance
1 $2,500,000 18904 $2,363,000 $252.50 0.8 $4,773,260 $2,410,260 $3,000,000 $3,089,740
2 $3,981,178 19282 $2,410,250 $255.03 0.85 $4,917,488 $2,507,238 $3,000,000 $4,473,940
3 $5,220,205 19667 $2,458,375 $257.58 0.87 $5,065,826 $2,607,451 $3,000,000 $5,612,754
4 $6,171,191 20061 $2,507,625 $260.15 0.92 $5,218,869 $2,711,244 $3,000,000 $6,459,947
5 $6,797,751 20462 $2,557,750 $262.75 0.93 $5,376,391 $2,818,641 $3,000,000 $6,979,110
6 $7,374,922 20871 $2,608,875 $265.38 1.15 $5,538,746 $2,929,871 $3,000,000 $7,445,051
7 $6,343,449 21289 $2,661,125 $268.03 1.2 $5,706,091 $3,044,966 $3,000,000 $6,298,483
8 $5,018,492 21714 $2,714,250 $270.71 1.18 $5,878,197 $3,163,947 $3,000,000 $4,854,546
9 $3,868,958 22149 $2,768,625 $273.42 1.03 $6,055,980 $3,287,355 $3,000,000 $3,581,603
10 $3,528,882 22592 $2,824,000 $276.16 0.95 $6,239,007 $3,415,007 $3,000,000 $3,113,875
11 $3,486,815 23043 $2,880,375 $278.92 0.98 $6,427,154 $3,546,779 $3,000,000 $2,940,036
12 $3,036,043 23504 $2,938,000 $281.71 1.14 $6,621,312 $3,683,312 $3,000,000 $2,352,731
$36,126,071
#Negative Months 0
Insufficient funds 0
P(Insufficient funds) 0.3246
5% chance of insufficient funds 34,319,767

From the above output, there are 32.46% of the probability have insufficient funds to pay claims during the year.

From the above output, if they want their only be a 5% chance of having insufficient funds then the amount approximately $34,400,000.


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