A Random Sample of 18 Observations Is Taken from a Normal

question 3

Multiple Choice

A random sample of 18 observations is taken from a normal population. The sample mean and sample standard deviation are 76.4 and 4.2, respectively. What is an 80% interval estimate of the population variance?

• A) [12.107, 29.735]
• B) [10.870, 34.581]
• C) [12.819, 31.484]
• D) [14.636, 23.443]

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Definitions:

Table Relationships

Refers to the connections between tables in a database, defined by one or more keys that establish a linkage among them for data organization and retrieval.

Primary Key Field

A unique identifier for each record in a database table, ensuring that each entry is distinct.

Column Headings

The labels or titles displayed at the top of each column in tables or spreadsheets, used to identify the type of data contained in the column.

Relational Database

A Relational Database is a type of database that stores and provides access to data points that are related to one another.