Use the Following Information to Answer the Question

question 39

Multiple Choice

Use the following information to answer the question. A janitor at a large office building believes that his supply of light bulbs has a defect rate that is different than the defect rate stated by the manufacturer. The janitor's null hypothesis is that the supply of light bulbs has a defect rate of p = 0.09 (the light bulb manufacturer's stated defect rate) . Suppose we do a hypothesis test with a significance level of 0.01. Symbolically, the null and alternative hypothesis are as follows: H₀: p = 0.09 and H_a: p > 0.09.
-Suppose the janitor tests 300 light bulbs and finds that 33 bulbs are defective. What value of the test statistic should he report? Round to the nearest hundredth.

• A)z = 1.21
• B)z = - 2.17
• C)z = 2.17
• D)z = - 1.21

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Definitions:

Intuitive Thought

A cognitive process that involves knowing or understanding something without the involvement of rational or logical thinking.

Egocentrism

A cognitive trait where an individual has difficulty understanding or assuming any perspective other than their own.

Social Warmth

A feeling of genuine friendliness and acceptance conveyed by individuals or groups.

Invincibility Fable

A cognitive bias commonly found in adolescents, where they believe themselves to be immune to dangers and risks that affect others.