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The Following MINITAB Output Display Presents the Results of a Hypothesis

question 45

Multiple Choice

The following MINITAB output display presents the results of a hypothesis test for the difference $\mu _ { 1 } - \mu _ { 2 }$ between two population means.
$The following MINITAB output display presents the results of a hypothesis test for the difference \mu _ { 1 } - \mu _ { 2 } between two population means. Difference = \operatorname { mu } ( \mathrm { X } 1 ) - \operatorname { mu } ( \mathrm { X } 2 ) Estimate for difference: - 26.338 95 \% CI for difference: ( - 47.152 , - 5.524 ) \mathrm { T } -Test of difference = 0 ( vs not = ) : T-Value = - 2.480133 \mathrm { P } - Value = 1.979112 \quad \mathrm { DF } = 23 How many degrees of freedom are there for the test statistic? A) 22 B) 26.338 C) 23 D) 1.979112$
Difference $= \operatorname { mu } ( \mathrm { X } 1 ) - \operatorname { mu } ( \mathrm { X } 2 )$
Estimate for difference: $- 26.338$
$95 \%$ CI for difference: $( - 47.152 , - 5.524 )$
$\mathrm { T }$ -Test of difference $= 0 ($ vs not $= ) :$ T-Value $= - 2.480133$
$\mathrm { P } -$ Value $= 1.979112 \quad \mathrm { DF } = 23$
How many degrees of freedom are there for the test statistic?

Definitions:

Brightness

The perception of how luminous an object appears to the human eye, influenced by the amount of light it emits or reflects.

Accommodate

To make adjustments or modifications to suit a particular need or condition.

Changing Stimuli

The variation or alteration in external or internal inputs that provoke responses from organisms or systems.

Constant Stimuli

A method in psychophysics used to measure the threshold at which a stimulus is detected by changing the intensity of the stimulus in constant increments or decrements.