Answer: (Python)
# Ask user for machine reading
reading = int(input("Enter the machine reading: "))
# Convert reading to letter grade
if reading >= 90:
grade = "A"
elif reading >= 80:
grade = "B"
elif reading >= 70:
grade = "C"
elif reading >= 60:
grade = "D"
else:
grade = "F"
# Print letter grade
print("The letter quality grade is:", grade)
Step-by-step explanation:
This script first prompts the user to enter the machine reading using the input() function and converts it to an integer using int(). It then uses a series of if statements to determine the letter grade based on the reading value. Finally, it prints the letter grade using the print() function.