practice working with relative frequency tables. weekend curfews determine the values of the letters to…

practice working with relative frequency tables. weekend curfews determine the values of the letters to complete the conditional relative frequency table by column. 16 years old 17 years old total before 10 p.m. 0.9 b 0.88 after 10 p.m. a 0.15 0.12 total 1.0 1.0 1.0 a = b =

practice working with relative frequency tables. weekend curfews determine the values of the letters to complete the conditional relative frequency table by column. 16 years old 17 years old total before 10 p.m. 0.9 b 0.88 after 10 p.m. a 0.15 0.12 total 1.0 1.0 1.0 a = b =

Answer

Answer:

$a = 0.1$ $b = 0.85$

Explanation:

Step1: Find the value of a

In the column for 16 - year - olds, the sum of the relative frequencies of "Before 10 p.m." and "After 10 p.m." must be 1. Since the relative frequency of "Before 10 p.m." for 16 - year - olds is 0.9, then $a=1 - 0.9=0.1$.

Step2: Find the value of b

In the column for 17 - year - olds, the sum of the relative frequencies of "Before 10 p.m." and "After 10 p.m." must be 1. Since the relative frequency of "After 10 p.m." for 17 - year - olds is 0.15, then $b = 1-0.15 = 0.85$.