Homework help please! n
psychology students took a standardized test. The scores are summarized in the Frequency Distribution Table below.

Scores Frequency
120 - 129 20
130 - 139 16
140 - 149 20
150 - 159
160 - 169 19
170 - 179 30

The scores are also described in the cumulative table shown below.

Scores Frequency
less than 130 20
less than 140 36
less than 150 56
less than 160 71
less than 170 90
less than 180
n

What is the missing value in the Frequency Distribution Table?

answer =