Question

kai scored in the 90th percentile in a math competition in her state. which of the following statements is true of kais score?
her score is lower than 89 percent of others in the competition.
her score is an outlier in this competition.
her score is higher than 10 percent of others in the competition.
her score is higher than 90 percent of others in the competition. 10 percent of people scored higher than her.
pregunta 35
1 puntos
paulette is taking a survey. instead of being honest, she is answering it in a way that she thinks will please the researchers. paulette is showing a(n)
experimenter bias.
sampling bias.
hindsight bias.
social desirability bias.

Explanation:

First Question (Kai's Score)

Step1: Understand Percentile Definition

A percentile (e.g., 90th percentile) means a score is higher than that percentage of scores. So 90th percentile: score > 90% of others, and 100% - 90% = 10% scored higher.

Step2: Analyze Each Option

• Option 1: "Lower than 89%" is wrong (should be higher than 90%).
• Option 2: "Outlier" – percentile doesn’t imply outlier.
• Option 3: "Higher than 10%" is wrong (should be higher than 90%).
• Option 4: Matches percentile definition (higher than 90%, 10% higher).

• Experimenter bias: Researcher’s influence, not participant’s.
• Sampling bias: Issue with sample selection, not response.
• Hindsight bias: "I knew it all along", not relevant.
• Social desirability bias: Answering to please others (matches Paulette’s behavior).

Answer:

Her score is higher than 90 percent of others in the competition. 10 percent of people scored higher than her.

Second Question (Paulette's Survey Bias)