Concept explainers
Analyzing Survey Data In a survey of 100 investors in the stock market,
50 owned shares in IBM
40 owned shares in AT&T
45 owned shares in GE
20 owned shares in both IBM and GE
15 owned shares in both AT&T and GE
20 owned shares in both IBM and AT&T
a. How many of the investors surveyed did not have shares in any of the three companies?
b. How many owned just IBM shares?
c. How many owned just GE shares?
d. I low many owned neither IBM nor GE?
e. I low many owned either IBM or AT&T but no GE?
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