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 parameter in the context of the problem.

Confidence intervals represent a range of plausible values for a parameter

A member of the US Forest Service was assigned to find a representative sample of heights (in feet) of Alligator Juniper (Juniperus deppeana), a tree species common in the Coconino National Forest. The forester, having procrastinated, decided to measure the first 35 trees closest to his house, obtaining an average height of 60.233 ft.  Based on the previous confidence interval, can the forester be confident the mean height of all Alligator Juniper is greater than 60 feet? Explain by interpreting the interval in context. 

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. Select the variable(s) of interest and whether they are categorical or quantitative.

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.  

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 sample for this experiment. 

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 . Does there appear to be a difference in the rates between the two populations?

Given the following sampling distribution (the top figure), determine which of A, B, or C is the most likely Bootstrap distribution we would observe from a sample.

Share some new and exciting things you have learned so far in this course. Ideas can include the Elements of Music, Elvis & The Beatles. Write 4-6 Paragraphs. Spelling, Grammar and Flow will count towards the final points. The most important thing is to share real honest learning! Also, do no write to the math requirement, I’d suggest to write more!