Instruction 9-4 A Drug Company Is Considering Marketing a New Local Anaesthetic

question 39

Short Answer

Instruction 9-4
A drug company is considering marketing a new local anaesthetic. The effective time of the anaesthetic the drug company is currently producing has a normal distribution with a mean of 7.4 minutes with a standard deviation of 1.2 minutes. The chemistry of the new anaesthetic is such that the effective time should be normal with the same standard deviation, but the mean effective time may be lower. If it is lower, the drug company will market the new anaesthetic; otherwise, it will continue to produce the older drug. A sample of size 36 results in a sample mean of 7.1. A hypothesis test will be done to help make the decision.
-Referring to Instruction 9-4,for a test with a level of significance of 0.10,the critical value would be ________.

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Definitions:

Prototyping

The process of creating an early model or sample of a product to test concepts or feasibility before full-scale production.

Subgoaling

Breaking down a main goal into smaller, more manageable objectives as a means to facilitate achievement.

Cram

The practice of intensely absorbing a large amount of information in a short period of time, often used in the context of studying.

Sequence

A specific order in which related events, movements, or things follow each other.