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1.Given the following dataset: 7, 5, 9, 15, 11, 8, 10. Which of the following is correct? (3%) (A) Mean = 9 (B) Median = 9.3 (C)Variance (σ2) = 8.78 (D)Sample size (n) = 6 (E)Standard deviation (σ) = 4.11

2. The shaded area accounts for approximately what percentage of the total area under the curve? (3%) (A) 5.5% (B) 10.7% (C) 13.5% (D)25.4% (E) 68.2%

3. A research group at NTU had studied the effect of a potential anticancer drug X. In their randomized trial, one group of mice was given X and another group was given sugar pills (placebo). Tumor size in many mice had reduced, and they reported the p-value to be p = 0.02. Which of the following interpretation is correct? (3%) (A) There is a 98% chance drug X is an effective anticancer drug. (B)There is a 98% chance that this experiment can be reproduced by other scientists. (C) There is a 2% chance drug X is an ineffective anticancer drug. (D)There is a 2% chance to observe the tumor reduction results seen in this study even if drug X has no effect at all. (E) Ail of the above.

4.Which of the following statements about UV-Vis spectrometry is correct? (3%) (A) Absorbance （A）is defined a A = , where Po and P represent the power of the light beam that has passed through the solvent and the analyte-containing solution, respectively. (B) Absorbance（A） is the reciprocal of transmittance (T); in other words, A = 1/T. (C)The molar extinction coefficient in Beer's law in SI units is m2/mol. (D)The molar extinction coefficient is characteristic of a molecular species and independent of the solvent. (E)Beer's law accurately describes the absorption behavior of all solutions regardless of their analyte concentration.

5.Which of the following statements about a Fourier transform IR spectrometer is correct? (4%) (A) It accurately measures the spectroscopic response one wavelength at a time. (B)It needs more time to acquire a spectrum than a scanning IR spectrometer. (C)It is usually equipped with a monochromator. (D)The absorbance at all wavelengths are measured simultaneously. (E)This type of instrument was named after the American physicist Daniel J. Fourier.

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