**# Create calculate_insurance_cost() function below: **

**### Python Functions: Medical Insurance Project**

**why my code have this error:****NameError: name ‘estimated_cost’ is not defined**

def calculate_insurance_cost(name, age, sex, bmi, num_of_children, smoker):

estimated_cost = 250*age - 128*sex + 370*bmi + 425*num_of_children + 24000*smoker - 12500

return estimated_cost

print(“The estimated insurance cost for person is " + str(estimated_cost) + " dollars.”)

# Estimate Maria’s insurance cost

maria_insurance_cost = calculate_insurance_cost(name = “Maria”, age = 28, sex = 0, bmi = 26.2, num_of_children = 3, smoker = 0)

print(“The estimated insurance cost for Maria is " + str(estimated_cost) + " dollars.”)

# Estimate Omar’s insurance cost

omar_insurance_cost = calculate_insurance_cost(name = “Omar”, age = 35, sex = 1, bmi = 22.2, num_of_children = 0, smoker = 1)

print(“The estimated insurance cost for Omar is " + str(estimated_cost) + " dollars.”)

#Estimate josef’s insurance cost

yusef_insurance_cost = calculate_insurance_cost(name = “yusef”, age = 39, sex = 1, bmi = 22.2, num_of_children = 0, smoker = 0)

print(“The estimated insurance cost for yusef is " + str(estimated_cost) + " dollars.”)

#difference_insurance_cost

def calculate_difference_insurance_cost():

difference_insurance_cost = omar_insurance_cost - maria_insurance_cost

return diff

print(“The difference in insurance cost is” + str(diff)+ “dollars.”)