Question

Suppose that your statistics professor tells you that the scores on a midterm exam were approximately

Answer 1

Answer:

• Yes

Step-by-step explanation:

z-score representing 85% is 1.04 (from table)

Let x be the score representing the lower limit of 85%.

Use the formula to find z-scores:

• z = (x - μ)/σ

We have:

• z = 1.04, μ = 78, σ = 7

Substitute the values and solve for x:

• 1.04 = (x - 78)/7
• x - 78 = 7.28
• x = 85.28

The lower limit of the top 15% is 85.28.

Since your score is greater than 85.28 you earned an A