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Research methodology and biostatistics quiz

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MID-Research Methodology & Biostatistics
Marks= 10
Question-1: (10-Marks)
Write null and Alternative Hypothesis for the Problem discussed below
1. A manufacturer of a drug claims that the drug manufactured by him is more effective
than the drug already available in the market. Write null and alternative hypothesis for
the given statement also mention the hypothesis is one tail or two tail?
2. An incidence of tuberculosis among people living in Eastern Province of Saudi Arabia
is known to be not more than 0.03. After conducting a medical survey, the researcher
believes that the incidence is much higher. The researcher is interested in detecting
whether true incidence of tuberculosis is larger than 0.03. Write null and alternative
hypothesis for the given statement also mention the hypothesis is one tail or two tail?
3. A quality control worker is going to check a large production of drug. If the lot has
5% or fewer defectives than the lot is of acceptable quality? Write null and alternative
hypothesis for the given statement also mention the hypothesis is one tail or two tail?
4. Two preparations of drug, presented in the same tablet form are tested for their
efficacy in alleviating headache. Preparation A is given to 25 patients, 17 claiming it
effective, while B has been given to 20 patients, 16 claiming it effective. Does this
provide evidence of a difference between A and B? Write null and alternative
hypothesis for the given statement also mention the hypothesis is one tail or two tail?
5. Two random samples each of 50 children were selected from two different
populations. Population A had iron deficiency anemia while population B have
healthy children in the same age group as population A. The hemoglobin (Hb)
measurements was collected for each child. Can we say at 5% level of significance
that mean Hb is different in the two populations also mention the hypothesis is one
tail or two tail? Which appropriate statistical can be applied in this in this situation
explain

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