a social media analyst wanted to know the average number of Facebook friends that young people of ages 13-16 have. She took a random sample of 100 children of ages 13-16 years old and found out that the average number of friends they have is 120 with a sample standard deviation of 12.4.If the samples are normally distributed, construct a 95% confidence interval for the mean number of friends of all Facebook users of ages 13-16