Determine the appropriate mathematical symbol that corresponds to each statement: =, ≥, ≤,≠, >, or <.
a) Mean SAT score of high school students is 625.
b) The proportion of batteries produced that are defective is at least 0.05.
c) The proportion of houses with solar panels is no more than 0.20.
d) The variance in weight of cement bags is less than 0.5 pounds.
e) Mean weight of new laptops is greater than 3 pounds.
f) Variance in pipe circumference is not equal to 5 inches.
g) The difference between mean systolic blood pressure in men and mean systolic pressure in women is at least zero.