$2025$ - $2026$ 学年 医学科学素养Ⅱ 小测4

基础医学专业课 线下小测
测试时间: 2025.10.30 16:00 - 2025.10.30 17:30
原卷中英文分布与该卷相同, 共 2 道题目, 满分 100 分

  1. A study was conducted to investigate the effect of a new medication on systolic blood pressure. Blood pressure was measured for 8 patients before and after taking the medication:

    Participant Pre-Treatment BP
    (mmHg)    		 Post-Treatment BP
    (mmHg)
    1 140 130
    2 150 142
    3 135 128
    4 160 152
    5 145 138
    6 155 148
    7 148 142
    8 142 135

    Please determine if the medication has a significant effect on reducing blood pressure at alpha = 0.05.



  2. Suppose you want to test whether smoking status is associated with lung disease in a sample of 200 individuals.

    Lung Disease No Disease Total
    Smoker 60 40 100
    Non-smoker 30 70 100
    Total 90 110 200

    Please fill the following table with expected frequencies and perform a Chi-square test at alpha = 0.05 (keep two-decimals during your calculation).

    Lung Disease No Disease
    Smoker
    Non-smoker

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