73 The days to maturity for a sample of five money market fu
73. The days to maturity for a sample of five money market funds arc shown here. The dollar amounts invested in the funds are provided. Use the weighted mean to determine the mean number of days to maturity for dollars invested in these five money mar¬ket funds.
Days to Maturity 20 12 7 5 6
dollar value ($millions) 20 30 10 15 10
Solution
Mean Number of days to maturity = 965/85 = 11.35 Days
| Maturity | Dollar value | Product | 
| 20 | 20 | 400 | 
| 12 | 30 | 360 | 
| 7 | 10 | 70 | 
| 5 | 15 | 75 | 
| 6 | 10 | 60 | 
| Total | 85 | 965 | 

