Answer:
Cannot be determined
Explanation:
Without any additional information, we cannot accurately determine the probability that the code number for a new customer will begin with the number 7.
To calculate the probability, we would need to know the total number of possible code numbers that can be assigned to new customers and how many of those code numbers start with the number 7. If we have that information, we can calculate the probability as follows:
Probability = Number of code numbers starting with 7 / Total number of possible code numbers
For example, if there are 1000 possible code numbers and 50 of them start with the number 7, the probability of a new customer's code number starting with 7 would be:
Probability = 50 / 1000
Probability = 0.05 or 5%