Question

Given the following information:

1.52, 1.86, 1.92, 2.02, 2.25, 2.62, 2.83, 2.91, 3.06

3.11, 3.18, 3.25, 3.30, 3.44, 3.58, 3.62, 3.85, 3.93

4.04, 4.44, 4.56, 5.01, 5.62, 5.99, 6.80

Is there enough evidence to say that the actual median differs from 2.8?

Use the sign test and the 0.05 level of signifcance.

Answer 1

Answer to the question)

Calculation to find the sign of each observation from median 2.8

Step 1: find difference of value and median 2.8

in next column just enter the sign of each difference value

count the number of minus signs

and count the number of plus signs

.