Friday

August 29, 2014

August 29, 2014

Posted by **Kendra** on Monday, August 10, 2009 at 5:45pm.

Of those seniors, the report said that:

80 owned only a Goldcard and a Supercard,

70 owned only a Goldcard and a Thriftcard,

60 owned only a Supercard and a Thriftcard, and

50 owned all three cards.

When the report was submitted for publication in the local campus newspaper, the editor refused to publish it, claiming the poll was not accurate. Was the editor right? Why or why not?

- word problem Math -
**Ms. Sue**, Monday, August 10, 2009 at 6:38pmThe editor was right. The numbers add up to more than 500.

- word problem Math -
**Reiny**, Monday, August 10, 2009 at 8:02pmUsing the formula ...

n(A or B or C)

= n(A) + n(B) + n(C) - n(A and B) - n(A and C) - n(B and C) + n(A and B and C)

500 = 240 + 290 + 270 - 80 - 70 - 60 + 50

500 = 640

not true, so data not consistent.

You could also make Venn diagrams to show the data distribution.

**Related Questions**

college math - The number of seniors at Freedom High School was 421 in 2002. If ...

statistics - I need to see the steps to figuring out this problem. 270 patients ...

geometry - the ratio of juniors to seniors is 9 to 8, if there are 51 juniors ...

math - Fifteen percent of the seniors voted for Joe. If 289 seniors voted for ...

english - Please help me identify the adjectives and adverbs in this: My ...

help with puncuation - James while John had had had had had had had had had had ...

Maths - Three boys shared some cards. Peter had twice as many cards as Farid. ...

math - The football team has 86 players. Thirty-two of those players are ...

MATHS - Could you please check my answer? Daniel played a cards game in which ...

statistic - here are five seniors in a class, for each situation, write how the ...