the conditional relative frequency table was generated using data that compares the number of voters in the…

the conditional relative frequency table was generated using data that compares the number of voters in the last election and whether or not they worked on election day. fifty people who voted and 85 people who did not vote were chosen at random and surveyed. how many people in the survey worked on election day? 32 34 66 69 did vote did not vote total did work 0.64 0.4 0.49 did not work 0.36 0.6 0.51 total 1.0 1.0 1.0

the conditional relative frequency table was generated using data that compares the number of voters in the last election and whether or not they worked on election day. fifty people who voted and 85 people who did not vote were chosen at random and surveyed. how many people in the survey worked on election day? 32 34 66 69 did vote did not vote total did work 0.64 0.4 0.49 did not work 0.36 0.6 0.51 total 1.0 1.0 1.0

Answer

Answer:

34

Explanation:

Step1: Calculate number of voters who worked

We know 50 people voted. The proportion of voters who worked is 0.64. So number of voters who worked is $50\times0.64 = 32$.

Step2: Calculate number of non - voters who worked

We know 85 people did not vote. The proportion of non - voters who worked is 0.4. So number of non - voters who worked is $85\times0.4=34$.

Step3: Calculate total number of people who worked

Total number of people who worked is sum of voters who worked and non - voters who worked. But we are interested in the number of non - voters who worked here as the question asks for all people who worked and we already calculated the non - voter part which is 34.