Post a New Question

stats

posted by on .

A normal distribution has a mean of µ = 28 with σ = 5. What is the minimum raw score needed to be in the top 25% of the distribution?

  • stats - ,

    Use z-scores.

    Determine the z-value using a z-table for the top 25%. Substitute the z into the formula, along with the mean and standard deviation. Solve for x.

    Formula:
    z = (x - mean)/sd

    I hope this will help get you started.

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question