The Mean Weight of Newborn Infants at a Community Hospital $\alpha$

question 33

Multiple Choice

The mean weight of newborn infants at a community hospital is said to be 6.6 pounds. A sample of seven infants is randomly selected and their weights at birth are recorded as 9.0, 7.3, 6.0, 8.8, 6.8, 8.4, and 6.6 pounds. If $\alpha$ = 0.05, what is the critical t value?

• A) -2.365
• B) \(\pm\) 1.96
• C) \(\pm\) 2.365
• D) \(\pm\) 2.447
• E) -2.447

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Definitions:

ATP

An essential nucleotide that serves as the main energy source for many cellular processes, functioning in energy transfer within cells.

Electrons

Subatomic particles with a negative charge, present in all atoms and acting as the primary carrier of electricity in solids.

Hydrogen Ions

Positively charged ions (H+) formed when a hydrogen atom loses its electron, playing a crucial role in acid-base chemistry.

Phosphate Ions

Inorganic chemical species consisting of a phosphorus atom bonded to four oxygen atoms, carrying a negative charge.