As part of the marketing group at a film studio, you are asked to find out the age distribution of the audience of the studio's latest family friendly film as well as if the viewers had seen the movie before. With the help of 10 of your colleagues, you conduct exit interviews by randomly selecting people to question at 20 different movie theatres. The results are in the table below. Complete parts b below (a is provided). Under 6 6 to 9 10 to 14 15 to 21 Over 21 Never 41 59 78 20 146 Once 1 16 36 3 15 More than Once 5 6 34 0 2 a) Find the marginal distribution of the audience's previous viewing of the movie. (Hint: find the row totals.) Find each frequency of the marginal distribution. Never 344 Once 71 Once + 47 b) Find the marginal distribution of the age ranges of the audience. Find each frequency of the marginal distribution. Under 6 6 to 9 10 to 14 15 to 21 Over 21

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

As part of the marketing group at a film studio, you are asked to find out the age distribution of the audience of the studio's latest family friendly film as well as if the viewers had seen the movie before. With the help of 10 of your colleagues, you conduct exit interviews by randomly selecting people to question at 20 different movie theatres. The results are in the table below. Complete parts b below (a is provided).

                             Under 6 6 to 9 10 to 14 15 to 21 Over 21
Never                  41          59        78           20           146
Once                   1            16        36           3             15
More than Once 5            6         34           0            2

a) Find the marginal distribution of the audience's previous viewing of the movie. (Hint: find the row totals.)

Find each frequency of the marginal distribution.