THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 67

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A school bus driver records the time (in minutes) it takes to commute to school for six days.Those results are: 25,22,17,20,15,and 10.Assuming the population is normally distributed,develop a 90% confidence interval for the population mean.
-What is the value of the sample mean?

• A)22.6
• B)20.4
• C)16.8
• D)18.2

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Definitions:

Dusk

The time of day immediately following sunset, characterized by diminishing natural light.

Noon

The middle of the day, typically regarded as 12:00 PM, when the Sun is at its highest point in the sky.

Carbon Dioxide

A colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air and absorbed by plants in photosynthesis.

Photosynthesis

The process by which green plants and some other organisms use sunlight to synthesize foods with carbon dioxide and water.