The answer: no
The question is: Does the density of helium cause voices to sound deeper?
The rationale is: Helium is less dense than air. Sound travels more quickly through helium than it does through air. When sound travels more quickly, the tone of it raises and sounds higher.

The answer: no
The question is: Do you need a farmer to make a circuit board?
The rationale is: Farmers cultivate and produce crops and/or livestock for sale or consumption. Circuit boards contain various man made materials as well as metals. Metals are produced from the earth by miners.

The answer: no
The question is: Do spider wasps have eight legs?
The rationale is: A spider wasp is a kind of wasp, which is an insect. Insects all have six legs.

The answer: no
The question is: Is Guitar Hero Beatles inappropriate for a US third grader?
The rationale is: The average age of a US third grader is 8. Guitar Hero is recommended for ages 7 and up. The Beatles were a British rock band with a plethora of radio friendly hits.