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A. Tell whether each situation calls for a two - tailed or one - tailed test. On the appropriate space draw a happy face if it is two-tailed and sad face if it is one-tailed. 1) A school nurse believe that 5% of the Grade 7 students have below normal Body Mass Index (BMI) and should undergo a feeding program. After making a survey, she found that 18 of 210 randomly selected students have have below normal BMI. 2) After launching the Water and Hygiene in School program, the principal believes that 95 % of the students applied tha proper handwashing techniques in school as well as at home. A random survey was conducted to 500 students and only 410 of them said they practiced correct handwashing technique both in school and at home