a researcher wanted to know the percentage of judges who are in favor of the death penalty. he took a random sample of 15 judges and asked them whether or not they favor the death penalty. the responses of these judges are given below : yes no yes yes no no no yes yes no yes yes yes no yes i) what is the point estimate of the population proportion ? (4) ii) what is the margin of error associated with this point of estimate ? (4) iii) make a 95% confidence interval for the percentage of all judges who are in favor of the death penalty.
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In an examination, the candidates are awarded the following grades depending on the marks scored by them Distinction: 280% first class: 60% marks 80%, second class, 45% marks 60% third class. 30% marks 45% fail :< 30% marks It was found that 8% of the students failed and 8% have scored distinction. Find the average marks obtained by the candidates. Deduce percentage of students placed in the second class. Assume normal distribution of marks.
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