Mathematics, 25.05.2021 02:00 kathlynskare06
20 POINTS
A high school senior wonders if being blindfolded affects a person’s typing accuracy. He randomly selects 17 students from his large school. For one of the treatments, the senior reads a statement to each student and asks them to type it while wearing a blindfold. For the other treatment, the student is asked to type a similar statement without wearing a blindfold. The order of treatments is determined with the flip of a coin. The mean difference (blindfolded – not blindfolded) in the number of correct words is 6.12 words with a standard deviation of 5.98 words.
Assuming the conditions for inference have been met, is there evidence of a difference, on average, in typing accuracy while wearing a blindfold and not wearing a blindfold? Use a significance level of α = 0.05.
A) Because the P-value is less than α, there is evidence of a difference, on average, in typing accuracy while wearing a blindfold and not wearing a blindfold.
B) Because the P-value is greater than α, there is evidence of a difference, on average, in typing accuracy while wearing a blindfold and not wearing a blindfold.
C) Because the P-value is less than α, there is not sufficient evidence of a difference, on average, in typing accuracy while wearing a blindfold and not wearing a blindfold.
D) Because the P-value is greater than α, there is not sufficient evidence of a difference, on average, in typing accuracy while wearing a blindfold and not wearing a blindfold.
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20 POINTS
A high school senior wonders if being blindfolded affects a person’s typing accuracy. H...
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