
    Develop a fraud detection function that analyzes a collection of bank transactions and identifies all transactions exceeding a specified dollar threshold for enhanced security review. The function should accept a dictionary of transaction IDs mapped to their dollar amounts, along with a threshold value, and return only those transactions that meet or exceed the threshold amount for further investigation.
    

    
def dict_filter(dict, n):
    """
    Develop a fraud detection function that analyzes a collection of bank transactions and identifies all transactions exceeding a specified dollar threshold for enhanced security review. The function should accept a dictionary of transaction IDs mapped to their dollar amounts, along with a threshold value, and return only those transactions that meet or exceed the threshold amount for further investigation.
    

    """
def dict_filter(dict, n):
    """
    Develop a fraud detection function that analyzes a collection of bank transactions and identifies all transactions exceeding a specified dollar threshold for enhanced security review. The function should accept a dictionary of transaction IDs mapped to their dollar amounts, along with a threshold value, and return only those transactions that meet or exceed the threshold amount for further investigation.
    

    """
    result = {key: value for (key, value) in dict.items() if value >= n}
    return result