To qualify for a Master’s degree program in Business Administration at Stanford University, candidates must score in the top 10% on a mental ability test. The test has a mean of 190 and a standard deviation of 25. Find the lowest possible score to qualify. Assume the test scores are normally distributed.
Step 1: Draw a figure and represent the area.
Step 2: Find the z value.
Step 3: Answer the question.
1.
2.
"P(Z\\leq z)=0.1"
"z\\approx1.28155"
3.
"x=190+1.28155(25)"
"x=222.03875"
The lowest possible score to qualify is 222.
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