An educational psychologist is interested in seeing if Return To College (RTC) students—that is, students who have not a

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An educational psychologist is interested in seeing if Return To
College (RTC) students—that is, students who have not attended
school for more than 4 years in order to work or raise a family—are
more motivated to achieve higher grades than students who have not
taken a break in their education. She knows that the distribution
of grade point averages (GPAs) for students at her college who have
not interrupted their education is normally distributed with a mean
of 2.90 and a standard deviation of 0.89. She collects the
following sample of GPAs for 10 RTC students. Use the data in Table
9.6 to answer the following questions.
GPA for RTC Students
Use the data to answer the following questions--MUST
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