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Six months into a new marketing program, the Manager assesses the current metrics of the plan to the original forecasted results. When she realizes that sales are not on target and the plan must be adjusted, she is:
Null Hypothesis
A default hypothesis that there is no significant difference or effect, often tested against an alternative hypothesis in statistical analysis to evaluate the strength of evidence.
Test Statistic
A numerical value computed from a statistical test's sample data, used in hypothesis testing to determine whether to reject the null hypothesis.
Critical Value
A point on a statistical distribution that represents a threshold beyond which observations are considered to be statistically significant.
Two-Tailed Tests
Statistical hypothesis tests that consider the possibility of both positive and negative deviations from the null hypothesis.
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