This JavaScript calculator is used to determine the number of hours required to exceed a goal of a specified amount. One sets the various parameters and then adjusts the hours to reach a specific z-score. A z-score of -1.65 means that there is a 95% probability of equalling or exceeding the goal. The default values are set as follows: one is playing a the double deck game from Table 10.43 on page 218 in "Blackjack Attack" with a $50 dollar unit bet and a goal of equalling or exceeding $20,000. By adjusting the number of hours, one can see that it takes 783 hours (at 100 hands per hour) to be 95% confident of equalling or exceeding $20,000

Enter your unit betsize (in dollars):
Enter your goal (in dollars):
Enter the Win/100 (from "Blackjack Attack":
Enter the SD/100 (from "Blackjack Attack"):
Enter the number of hours you wish to play:
Your z-score is:

NOTES:
A z-score of -1.65 means 95% probability of exceeding your goal
A z-score of -2.33 means 99% probability of exceeding your goal