Question

Drug that claims to lower fever. say we have 20 subjects, seems in general that fever is lowered.Can we say that drug is affective on the population?

A) Say take 50 subjects ( assume time & resources allow) is this enough?
B) How many people needed to be confident in result?

Answer 1

Statistical analysis can help determine the sample size needed for a significant result. Power analysis can determine the number of people needed to be confident in the result.

Step-by-step explanation:

A) To determine if 20 subjects are enough, statistical analysis can be performed. The sample size needed for a statistically significant result depends on various factors such as the desired confidence level and acceptable margin of error.

B) The number of people needed to be confident in the result can be determined through statistical power analysis, which takes into account factors such as the desired confidence level, effect size, and variability in the data.