Use the Following Information to Answer the Question

question 30

Short Answer

Use the following information to answer the question. A manager at a large office supply store believes that her supply of pencils has a defect rate that is higher than the defect rate stated by the manufacturer. The manager's null hypothesis is that the supply of pencils has a defect rate of p = 0.025 (the pencil manufacturer's stated defect rate). Suppose we do a test with a significance level of 0.05. Symbolically, the null and alternative hypothesis are as follows: H₀: p = 0.025 and H_a: p > 0.025.
-Suppose the store manager tests 150 pencils and finds that 9 are defective. Calculate the z test statistic. Round to the nearest hundredth.

---

Definitions:

Multiple Sclerosis

An autoimmune disorder where the body's immune system attacks the protective sheath (myelin) of nerve fibers, causing communication problems between the brain and the rest of the body.

End Plate

On a muscle, the receptor–ion complex that is activated by the release of the neurotransmitter acetylcholine from the terminal of a motor neuron.

Muscle Membrane

The semipermeable membrane surrounding muscle cells or fibers, essential for muscle contraction and signaling.

Dendrite Membrane

The outer cover of dendrites, which are the branch-like extensions of neurons that receive signals from other neurons.