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# Help on two-way frequency table...

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A two-way frequency table is shown below that displays the relationship between age and preferred vacation destination. We took a sample of 100 people and recorded the following results:

Disney World            Las Vegas           Alaska Cruise        Total

10–25 years        23                            4                       3                             30

26–40 years        8                               21                    5                             34

41–55 years       11                            12                    13                            36

Total                   42                             37                  21                              100

What is the probability (rounded to the nearest whole percent) that a randomly selected person is 41 to 55 years old or prefers vacationing in Disney World?

78%

67%

26%

11%

I was going off of estimation... not sure where to start.

failurewithasmile  Apr 15, 2017
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P( 41-55  or Disney World)  = P(41-55)  + P(Disney World)  - P(41-55 and Disney World)

P( 41-55  or Disney World)  =   .36         +       .42                  -         .11

=    .67   =  67%

CPhill  Apr 15, 2017