The following are the weight (kg) of 20 senior high school students: 1. What is the mean, variance, and standard deviation? 2. What is the z-score of 50 kg? 3. How many percent of students have a...

The following are the weight (kg) of 20 senior high school students:

1. What is the mean, variance, and standard deviation?

2. What is the z-score of 50 kg?

3. How many percent of students have a weight between 48 and 60? _____%

4. Show the areas of 48 and 60 in the normal curve.

5. What is the percentile rank of a student with a weight of 53kg?

6. What weight belongs to the 60th percentile?