A Group of Statistics Students Decided to Conduct a Survey

question 16

Multiple Choice

A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time students spent studying per week. They sampled 240 students and found a mean of 22.3 hours per week. Assuming a population standard deviation of six hours,what is the 99% level of confidence?

• A)[21.80,22.80]
• B)[16.3,28.3]
• C)[21.30,23.30]
• D)[20.22,22.0]

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Definitions:

\(n !\)

\(n !\), pronounced n factorial, is the product of all positive integers less than or equal to n. For instance, \(4! = 4 \times 3 \times 2 \times 1 = 24\).

\(9 n + 1\)

An algebraic expression representing a linear function in terms of n.

\(3 ^ { n - 1 }\)

This represents an exponential expression where a base of 3 is raised to the power of \(n - 1\), with \(n\) being any real number.