Question

A random sample of 10 examination papers in a course, which was given on a pass or fail basis, showed the following scores.Paper Number /Grade /Status1 65 Pass2 87 Pass3 92 Pass4 35 Fail5 79 Pass6 100 Pass7 48 Fail8 74 Pass9 79 Pass10 91 Pass1. The point estimate for the mean of the population is2. The point estimate for the standard deviation of the population is3. The point estimate for the variance of the population is4. The point estimate for the proportion of all students who passed the ciurse is

Answer 1

1. The point estimate for the mean of the population is 79.

2. The point estimate for the standard deviation of the population is 27.1.

3. The point estimate for the variance of the population is 735.61.

4. The point estimate for the proportion of all students who passed the course is 80%.