A coin is tossed twice and comes up heads both times. Someone says, “There’s something wrong with this coin. A coin is supposed to come up heads only half the time, not every time.”
a. Is it reasonable to conclude that something is wrong with the coin? Explain.
b. If the coin came up heads 100 times in a row, would it be reasonable to conclude that something is wrong with the coin? Explain.
(a) No. This could well be sampling variation.
(b) Yes. It is virtually impossible for sampling variation to be this large.
You might also like to view...
When straightness is connected to the surface of the feature with a leader, ____ is implied.
A. surface straightness B. axis straightness C. unit straightness D. zone straigthness E. none of the above
Water molecules have polarity primarily because each contains two H atoms and only one O atom
Indicate whether the statement is true or false
When evacuating a system, the technician should __________ operate the compressor while the system is in a deep vacuum.
A. always B. occasionally C. never
_____ measures the sustainability and renewability of a resource.
A. Embodied energy B. Environmental degradation C. Resource depletion D. Performance and durability