Which survey is most likely affected by bias?
a survey of teenagers about their favorite colors
a survey of students about vacation policies in a school district
a survey of supermarket shoppers about products they would like to see added
a survey of bike riders on whether they wear helmets

Option A is correct (a survey of teenagers about their favorite colors).

Step-by-step explanation:

Option B and D are about something relating to law, policy. It is almost not bias.

Option C is about some wishes or preferences, but still there is a dependency on supermarket rule. => less likely to be bias.

Only option A: only base on preference, hobby => 100% subjective => most likely to be bias.

Hope this helps!

:)

its A

Step-by-step explanation:

15% chance.

step-by-step explanation:

3/10 times, the 5 year old will get a tablet. 5/10 times, the 13 yer old will get a tablet. multiply both fractions to get 15/100 times, both would have a tablet.

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed