To Estimate with 95% Confidence the Average Number of Kilometres

question 98

Multiple Choice

To estimate with 95% confidence the average number of kilometres that students living off-campus commute to classes every day, a random sample of 20 students was taken and produced a mean equal to 5.2 km and a standard deviation of 3.05 km. In this case, what would be the approximate value of the upper limit for a 95% confidence interval estimate for the true population mean?

• A) 6.63
• B) 5.20
• C) 3.22
• D) 2.15

---

Definitions:

Field List

A list or palette in database and software development environments that displays the fields or attributes available for use in a table or form.

Format Property

An attribute in software that controls the appearance, arrangement, or layout of data and elements.

Date/Time Field

A specific type of data field used in databases and forms designed to store dates and times in a consistent format.

Number Field

A data field specifically designed to store numeric information.