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Below are three different confidence intervals corresponding to the same sample statistic but different samples sizes, with options of n=10, 25, or 50. Match each confidence interval with the correct sample size.  

A study from the Danish Twin Registry (from Statistics: A guide to the Unknown) looked at the rates of concordance of certain somatic diseases between identical and non-identical twins, where our example focuses on epilepsy. What this means is that if one twin had epilepsy, it was recorded whether or not the other twin also had it. The rate of concordance for identical twins was 54% and for non-identical 24%. Below is the bootstrap dotplot from the sample. Choose the correct interpretation of the given confidence interval [conf]. Does there appear to be a difference in the rates between the two populations? [diff]

An experiment was conducted seeing whether senior citizens taking fish oil supplements had lower levels of inflammation on average than those not taking the supplement. In the experiment, the 36 senior citizens in the group taking the oil had average levels of an inflammatory marker of 86.6 mmol/mL and the 40 individuals in the group not taking the oil had levels of 102.9 mmol/mL. Choose the correct notation for the sample statistic.

An experiment was conducted seeing whether senior citizens taking fish oil supplements had lower levels of inflammation on average than those not taking the supplement. In the experiment, the 36 senior citizens in the group taking the oil had average levels of an inflammatory marker of 86.6 mmol/mL and the 40 individuals in the group not taking the oil had levels of 102.9 mmol/mL. Describe the population of interest in the context of the problem.

In the “To Do” area of the Sidebar I can click on an assignment and go directly to it.

Netiquette best practices in this class include all of the following except:

Every Los Rios course will appear in Canvas for students.

In this class, Chapter readings are scheduled to be done before quiz due dates with time devoted the week following the quiz to review any challenging concepts

If you have a technical issue at 11:50 PM on the night an assignment is due, the best thing to do is to:

The best way to contact your instructor for this class is to