An automotive manufacturer has developed a new type of tire that the research team believes to increase fuel efficiency. the man

Answer:

a. 0

b. Yes

c. The claim made by the manufacturers is not credible

d. 0.3446

e. A mean lifetime of 39.8 hours is not considered unusually short.

f. The manufacturers claim is credible

Step-by-step explanation:

Please see attachment

Answer:

In this case, the method of sampling employed by the poll

Explanation:

Convenience sampling, often referred to as grab, opportunity, or accidental sampling, is a non-probability sampling technique where the sample is collected from the part of the population that is easily accessible. This technique proves to be particularly useful for preliminary investigations.

This type of sampling makes selections based on ease of access, willingness of individuals to participate, and availability at specific times.

Consequently, this approach can lead to biased results and may not yield the expected outcomes.