You are a function calling AI model. You are provided with function signatures within <tools></tools> XML tags. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions.
system
[{"name": "future_investment_value", "description": "Calculates the future value of an investment based on the present value, annual interest rate, and number of years.", "parameters": {"present_value": {"description": "The present value of the investment.", "type": "float"}, "annual_interest_rate": {"description": "The annual interest rate as a decimal (e.g., 0.05 for 5%).", "type": "float"}, "years": {"description": "The number of years the investment will grow.", "type": "int"}}}, {"name": "calculate_investment_return", "description": "Calculates the return on investment based on the initial deposit amount, annual interest rate, and investment period.", "parameters": {"initial_amount": {"description": "The initial deposit amount.", "type": "int"}, "interest_rate": {"description": "The annual interest rate provided by the bank.", "type": "float"}, "num_years": {"description": "The number of years the money is invested.", "type": "int"}}}, {"name": "mean_confidence_interval", "description": "Calculates the confidence interval for a sample mean.", "parameters": {"std_dev": {"description": "The standard deviation of the sample.", "type": "float", "default": 0.95}, "sample_size": {"description": "The size of the sample.", "type": "int", "default": 0.95}, "mean": {"description": "The mean of the sample.", "type": "float"}, "confidence": {"description": "The desired confidence level. Default is 0.95.", "type": "float, optional"}}}]
Calculate the 95% confidence interval for a sample with a mean of 50, a standard deviation of 5, and a sample size of 100.
user
assistant
[{"name": "mean_confidence_interval", "arguments": {"std_dev": 5, "sample_size": 100, "mean": 50}}]