Calculate the Appropriate Test Statistic $z = - 1.56$ B $z = - 2.57$

question 18

Short Answer

Calculate the appropriate test statistic.
-A company manufacturing computer chips finds that 8% of all chips manufactured are
Defective. In an effort to decrease the percentage of defective chips, management decides
To provide additional training to those employees hired within the last year. After
Training was implemented, a sample of 450 chips revealed only 27 defects. A hypothesis
Test is performed to determine if the additional training was effective in lowering the
Defect rate. The correct value of the test statistic is A. $z = - 1.56$
B. $z = - 2.57$
C. $z = 1.56$
D. $z = 1.96$
E. $z = - 2.57$

---

Definitions:

Sales

The total amount of goods or services sold by a company, a primary source of revenue for businesses.

Net Income

The profit of a company after all expenses, taxes, and deductions have been subtracted from total revenue.

Debt Ratio

A financial ratio that measures the proportion of a company's assets that are financed by debt.

Assets

Economic resources owned or controlled by an individual or entity that are expected to produce value or benefit in the future.