Question
11. A study was conducted to investigate effectiveness of hypnotism in reducing pain. Results for randomly selected subjects are shown in the table below. A
11. A study was conducted to investigate effectiveness of hypnotism in reducing pain. Results for randomly selected subjects are shown in the table below. A lower score indicates lower pain. The 'before' and 'after values are matched pairs (dependent samples). Are the sensory measurements, on average, lower after hypnotism? Use 0.10 significance level. Use this information to answer parts a) - f). Subject A B C D E F G H Before 6.6 6.5 9.0 10.3 11.3 8.1 6.3 11.6 After 6.8 2.4 7.4 8.5 8.1 6.1 3.4 2.0 a) State the hypotheses and label the claim. (1 point) b) State the significance level (). ____________ (1 point) c) Is the test left-tailed, right-tailed, or two-tailed (circle one)? (1 point) d) What is the critical value(s)? (3 points) e) What is the P-value and test-statistic? (3 points) f) State the conclusion. Statistically speaking, is hypnotism effective in lowering sensory measurements?
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