Excercise1 RI (reference interval) &CI (confidence interval)

Q1:A data set of Height from 100 female students of age 14, mean 55.0kgSD 4.0kgfind 95% and 99% confidence interval population mean of height of female students of age 20 by Z score.( Z_0.025=1.96 )

• Calculate the 95% CI of average weight of females of age14

• How to assess a 14 years old girl's weight 70kg? ( Calculate the 95% RI of weight of females of age14 )

Q2.weight data set of 9 female students of age 15, mean 40 kgSD 4.2kgfind 95% confidence interval of population mean of height of female students of age 15

• n=10-1=9find in t-table t_0.025,9=2.262, t_0.0051,9=3.25
• Calculate the 95% CI of weight of females of age 15.