Question

The systolic blood pressure of 67 employees from a company's IT division were recorded. There were 38 of these employees with systolic blood pressure readings above 120, 25 with readings below 120, and 4 had readings of exactly 120. A sign test at the 0.05 significance level will be used to test the claim that the median systolic blood pressure for the company's IT division employees is 120.

Round your answers to 3 places after the decimal point, if necessary.

(a) What is the value of the test statistic used in this sign test?

     Test statistic's value:

(b) Give the value(s) of the critical value(s) used in this sign test. If there are two critical values, enter them both with a comma between them.

    Critical value(s):

Answer 1