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": "investment_profit", "description": "Calculates the profit from an investment based on the initial amount, annual return rate, and time.", "parameters": {"amount": {"description": "The initial investment amount.", "type": "float"}, "rate": {"description": "The annual return rate expressed as a decimal.", "type": "float"}, "years": {"description": "The number of years the investment is held.", "type": "int"}}}, {"name": "light_travel_time", "description": "Calculate the time taken for light to travel from one celestial body to another.", "parameters": {"distance_in_light_years": {"description": "The distance between the two celestial bodies in light years.", "type": "int", "default": 299792458}, "speed_of_light": {"description": "The speed of light in vacuum, in m/s. Default value is 299792458 m/s.", "type": "int", "default": 299792458}}}, {"name": "fibonacci_numbers", "description": "Generates the first n Fibonacci numbers.", "parameters": {"n": {"description": "The number of Fibonacci numbers to generate.", "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 99% confidence interval for a sample with a mean of 75, a standard deviation of 10, and a sample size of 100.
user
assistant
[{"name": "mean_confidence_interval", "arguments": {"std_dev": 10, "sample_size": 100, "mean": 75, "confidence": 0.99}}]