116k views
4 votes
Suppose ACT Reading scores are normally distributed with a mean of 21.4 and a standard deviation of 6.2. A university plans to award scholarships to students whose scores are in the top 8%. What is the minimum score required for the scholarship? Round your answer to the nearest tenth, if necessary.

2 Answers

7 votes

Answer:

im sorry

Explanation:

User Paul Hoenecke
by
4.8k points
7 votes

Answer:

30.1

Explanation:

Mean score (μ) = 21.4

Standard deviation (σ) = 6.2

If only the top 8% of scores will get scholarships, students whose scores are at the 92nd percentile or above qualify for a scholarship. In a normal distribution, the 92nd percentile has a corresponding z-score of z = 1.405.

The minimum score, X, required for a scholarship is given by:


z=(X-\mu)/(\sigma) \\1.405=(X-21.4)/(6.2)\\ X=30.1

The minimum score required for the scholarship is 30.1.

User Tuma
by
6.3k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.