Chapter PIII, Problem 16RE

To determine

To find: that it is an observational study, sample survey or an experiment and all the parameter of this study and survey and types of conclusions could be reached on the basis of given data.

Explanation of Solution

There have the details about bottle caps for soft drinks. It is a survey for sampling. The population consists of all bottle cap seals and whether or not bottles are properly sealed is the parameter of concern.

Systematic sampling is the sampling method where the inspector tests the bottles for the same number of intervals and if any bottle caps are not correctly, they stop the bottling process and they say the correct adjustment or repair might be required for the machine.