Question

in a survey, 250 shoppers were asked whether they have access to a computer at home and if they have a personal e - mail account. their responses are summarized in the following table.

	e - mail account	no e - mail account
no computer access at home	27	133

(a) what percentage of the shoppers do not have an e - mail account?
(b) what percentage of the shoppers do not have computer access at home?

Explanation:

Step1: Calculate total shoppers without e - mail account

The number of shoppers without an e - mail account is $17 + 133=150$.

Step2: Calculate percentage of shoppers without e - mail account

The total number of shoppers is $250$. The percentage is $\frac{150}{250}\times100\%$.
$\frac{150}{250}\times100\% = 60\%$.

Step3: Calculate total shoppers without computer access at home

The number of shoppers without computer access at home is $27+133 = 160$.

Step4: Calculate percentage of shoppers without computer access at home

The percentage is $\frac{160}{250}\times100\%$.
$\frac{160}{250}\times100\%=64\%$.

Answer:

(a) 60%
(b) 64%