A Standard Normal Distribution Has the Following Characteristics

question 30

Multiple Choice

A standard normal distribution has the following characteristics:

• A)the mean and the variance are both equal to 1
• B)the mean and the variance are both equal to 0
• C)the mean is equal to the variance
• D)the mean is equal to 0 and the variance is equal to 1
• E)the mean is equal to the standard deviation

Understand the scope and naming conventions for diseases with widespread geographical impact.

Understand the impact of commercialization on leisure activities.

Distinguish between the concepts of leisure and recreation.

Recognize how technological advancements and societal changes influence recreational activities and leisure time.

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Definitions:

T-test

A statistical test used to compare the means of two groups or test a single mean against a known value.

Critical Value

A point on the scale of the test statistic beyond which we reject the null hypothesis; it defines the cutoff between significance and non-significance.

Null Hypothesis

A hypothesis that suggests there is no significant difference between specified populations, or no association among groups.

Null Hypothesis

A statistical hypothesis that assumes no effect or no difference in an experiment or study, serving as the default assumption to be tested.