2. Suppose that student ratings by males of a college course are normally distributed. For one
particular semester, the ratings given by males for this course are below.
4.0 3.6 4.1 3.5 4.6 4.0 4.3
a.) Calculate and interpret a 99% confidence interval for the true mean rating by males.
b.) What could theoretically change in part (a) to make the confidence interval wider?
(ie. How would one of the numbers have to change to result in a wider answer?)

What is the missing step in this proof? scroll down to see the entire proof. u

Which of the following best describes the difference between “autobiography” and “memoir”? a. autobiography is written about the author's own interpretation of events; memoir is a written interpretation of events. b. memoir covers a particular time in the writer’s life or recounts life events around one or two themes; autobiography covers the entire story of the author's life and has multiple themes. c. autobiography covers the entire story of the writer's life and has multiple themes; memoir is a shorter written work with one theme. d. autobiography covers entire story of the writer's life and has multiple themes; memoir is the writer’s random memories about past experiences.

What are the three stages of volcanic activity? a. active, magma, lava c. extinct, eruption, explosive b. eruption, quiet, explosive d. active, dormant, extinct