A Researcher Determines a Sample of Size (N) 100 Is

question 35

Multiple Choice

A researcher determines a sample of size (n) 100 is necessary to estimate a population mean with 95% confidence (z = 2) . The calculation of sample size required that he estimate the population standard deviation since it was unknown, and he estimated it as 150. The 100 observations produced a sample mean and a sample standard______________deviation The resulting confidence interval is

• A) 970 < μ < 1030.
• B) 996 < μ < 1004.
• C) 997 < μ < 1003.
• D) 960 < μ < 1040.
• E) There are two possible confidence intervals.

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Definitions:

Children's Relationships

The social connections and interactions that children have with peers, family members, and other figures in their lives.

Hypothesis

A proposed explanation made on the basis of limited evidence as a starting point for further investigation.

Scientific Research Approach

A systematic and methodological process of inquiry and investigation, aimed at discovering new knowledge or understanding phenomena in a structured and empirical way.

Collecting Data

The process of gathering and measuring information on variables of interest in an established systematic fashion, enabling one to answer stated research questions.