Isn't this sentence wrong?

0 Hello Everyone,02br
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00Following is a sentence I read in a newspaper article today:02br
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00If something took us by surprise, it has to be this: a survey involving 779 women between the purse-carrying ages of 19 and 45 01u01i01b00have02b02i02u00 shown that 74 per cent of women think of shopping every minute.02br
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00Shouldn't it be 'has' instead of 'have' according to the rules of subject-verb agreement? 02br
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00Thank you very much!02br
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00Regards,02br
00Mr. Anonymous 02br
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00PS Interesting fact, by the way! One more thing; please point out any mistakes that you find in this post. I shall be very grateful to you! 0-