A company wants to hire people with some basic skills in business statistics. As part of their

preliminary screening process, they test the statistics problem-solving ability and Excel skills of

applicants. They typically get hundreds of applicants making such testing time consuming and costly.

They are wondering if just a test of statistics or a test of Excel skills will suffice. As a preliminary

analysis, they take a random sample of the test scores of 10 applicants, which are as follows (in

percentages)