import math

print("Calculating confidence of 95%")
avg = float(input("Enter average of the data:"))
n = int(input("Enter number of items:"))
sd = float(input("Enter standard devation:"))
z = 1.96

conf_high = avg + z * (sd/math.sqrt(n))
conf_low = avg - z * (sd/math.sqrt(n))

print("Confidence high: {}".format(conf_high))
print("Confidence low: {}".format(conf_low))
print("With 95 percent confidence we have determined that the\nmean of the data is between\n{} and {}".format(conf_low, conf_high))