Suppose a Population Has a Mean of 400 and a Standard

question 47

Multiple Choice

Suppose a population has a mean of 400 and a standard deviation of 24.If a random sample of size 144 is drawn from the population,the probability of drawing a sample with a mean less than 402 is _______.

• A) 0.3413
• B) 0.6826
• C) 0.8413
• D) 0.1587
• E) 0.9875

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Definitions:

Chi-Square

A statistical test used to determine if a significant relationship exists between two variables in a contingency table.

Values Expected

The anticipated or predicted outcomes based on specific conditions or data.

Chi-Square Test

A statistical test used to determine the likelihood of observed frequencies in a categorical dataset differing by chance from expected frequencies.

Nominal and Ordinal

Pertaining to the types of data measurement scales; nominal scale categorizes data without a numerical order, while ordinal scale organizes data in a specific, ranked order.