Brian Vanecek, VP of Operations at Portland Trust Bank, Is

question 53

Multiple Choice

Brian Vanecek, VP of Operations at Portland Trust Bank, is evaluating the service level provided to walk-in customers.Brian would like to minimize the variance of waiting time for these customers, since this would mean each customer received the same level of service.Accordingly, his staff recorded the waiting times for 15 randomly selected walk-in customers, and determined that their mean waiting time was 15 minutes and that the standard deviation was 4 minutes.Assume that waiting time is normally distributed.The 95% confidence interval for the population variance of waiting times is ________.

• A)9.46 to 34.09
• B)56.25 to 64.87
• C)11.05 to 16.03
• D)8.58 to 39.79
• E)12.50 to 42.35

---

Definitions:

Genetic Fixation

The process by which a particular allele becomes the only allele at its genetic locus within a population or species, often as a result of genetic drift or natural selection.

Natural Selection

The process by which organisms better adapted to their environment tend to survive and produce more offspring, leading to evolutionary changes.

Mutation Rate

The frequency at which mutations occur in a genome over a specific time frame.

Heritability

An estimate of the proportion of trait variability within a population that is due to genetic differences between individuals.