Answer:
The margins of error for Henri is 0.104.
The margins of error for Terence is 0.113.
Explanation:
Consider the provided information.
Henri and Terence drew samples of size 50 from a mystery bag.
Henri drew 42 red chips,

The formula to calculate margins of error is:

Substitute n = 50 and
in above formula.
Margin of error for Henri =

Margin of error for Henri =

Margin of error for Henri ≈ 0.104
Hence, the margins of error for Henri is 0.104.
Terence drew 40 red chips,

The formula to calculate margins of error is:

Substitute n = 50 and
in above formula.
Margin of error for Terence =

Margin of error for Terence =

Margin of error for Terence ≈ 0.113
Hence, the margins of error for Terence is 0.113.