Classify as independent ordependent samples: The blood pressures of two separate
ID: 2919192 • Letter: C
Question
Classify as independent ordependent samples: The blood pressures of two separate groups of 10volunteers before and after exercise.independent
dependent Classify asindependent or dependent samples: The effectiveness of Tylenol ontwenty patients, and the effectiveness of aspirin on those twentypatients.
independent
dependent
An aerospace parts factory has oneproduction line creating a single population of fasteners; thewidths of these fasteners are normally distributed. A sampleof 50 fasteners is selected from the production line for qualitycontrol inspection. The width of each selected fastener ismeasured; and the mean of the measured widths of selected fastenersis compared to the design value. Can the z test be used inthis hypothesis test?
Yes
No
Classify as independent ordependent samples: The blood pressures of two separate groups of 10volunteers before and after exercise.
independent
dependent Classify asindependent or dependent samples: The effectiveness of Tylenol ontwenty patients, and the effectiveness of aspirin on those twentypatients.
independent
dependent
An aerospace parts factory has oneproduction line creating a single population of fasteners; thewidths of these fasteners are normally distributed. A sampleof 50 fasteners is selected from the production line for qualitycontrol inspection. The width of each selected fastener ismeasured; and the mean of the measured widths of selected fastenersis compared to the design value. Can the z test be used inthis hypothesis test?
Yes
No
Explanation / Answer
1) Dependent. Here the two samples are paired. The data were recorded on the samevolunteers. So, they are Dependent samples 2)Dependent Here also the two samples are paired. The data were recorded on thesame patients . So, they are Dependent samples 3)Yes. Here the sample size is n = 50 n>30, so we can use z test