Question 15 1 pts Section 1.3-9- State the type of study- The Nielsen company in

Question

Question 15 1 pts Section 1.3-9- State the type of study- The Nielsen company installs devices in homes to record the TV shows that are watched. The results are used to provide ratings identifying which shows are being viewed more than others. O Experimental O Observational O Observational, retrospective O Meta-analysis Question 16 1 pts Section 1.3-11-State the type of study -In a study of the effects of magnets on back pain, some subjects were treated with magnets while others were given non-magnetic devices with a similar appearance. The magnets did not appear to be effective in treating back pain O Experimental O Observational Observational, retrospective Meta-analysis

Explanation / Answer

Here we observe the data after the installation of devices.

Also a retrospective study means we looks backwards and examines exposures to suspected risk or

protection factors in relation to an outcome that is established at the start of the study.

So correct choice of Question 15 is C ) Observational, retrospective.

Question 16 ) Experimental.

Here we want to apply a treatment on two groups and see what happen after the treatment.

So that this is the experimental study.  

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