A Researcher Is Interested in Estimating the Mean Value for a Population.She

question 32

Multiple Choice

A researcher is interested in estimating the mean value for a population.She takes a random sample of 17 items and computes a sample mean of 224 and a sample standard deviation of 32.She decides to construct a 98% confidence interval to estimate the mean.The degrees of freedom associated with this problem are ___.

• A)18
• B)17
• C)16
• D)15
• E)20

---

Definitions:

Regioselectivity

The preference of one direction of chemical bond making or breaking over all other possible directions, often observed in chemical reactions.

2-methylpropene

An alkene with the molecular formula C4H8, characterized by a double bond and a methyl group attached to the second carbon in the chain.

Regioisomeric Product

A product that differs from another by the location of a chemical group or key structural element within the molecule.

Regio-

A prefix in chemistry that describes the position or orientation of functional groups in a molecule relative to each other.