Twenty-Three Concrete Blocks Were Sampled and Tested for Crushing Strength

question 43

Multiple Choice

Twenty-three concrete blocks were sampled and tested for crushing strength in order to estimate the proportion that were sufficiently strong for a certain application. Eighteen of the 23 blocks were sufficiently strong. Use the small-sample method to construct a 95% confidence interval for the proportion of blocks that are sufficiently strong

• A)(0.575, 0.906)
• B)(0.614, 0.951)
• C)(0.562, 0.920)
• D)(0.602, 0.879)

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Definitions:

Fontanelles

Soft spots on a baby's skull where the bones have not yet fused together, allowing for easier birth and brain growth.

Neonate's Skull

Describes the characteristics and conditions of a newborn baby's skull, which is notably soft and flexible due to fontanelles.

Bones

The rigid organs that form part of the endoskeleton of vertebrates, providing support, protection, and aiding in movement.

Fused

Combined or blended to form a single entity.