I have completed a one numerical variable study on proper age to use social media. following are the results

first number is age, 2nd number is number of parent that choose that age. I used 25 values

age 8- 2

age 10- 3

age 11- 2

age 12 - 5

age 14 - 10

age 15 - 3

I need to find

1 - the mean, median, mode(s) , variance, standard deviation, and range.

2- is the distribution skewed

3. 3 standard deviation intervals and the percent of values in each and compare with the empirical and chebsyshev's rule

4. find the z scores for at least 4 of the values in data set and describe them using the relative standing value you get

5. find the 75th, 95th, and 99th percentiles for the numerical data

6. define a random variable using data set, classify it and and give probability distribution if possible (table, function or graph)

7. a 95% confidence interval for the mean of your data set (use the normal or t-distribution based on the sample size you choose)