110 because avg speed is total distance over total time
Answer:
B. Stratified sampling, because there are specific subgroups to investigate.
Step-by-step explanation:
Stratified Sampling is a sampling method and is used when the population has subgroups with different characteristics. Random sampling is applied in each of the sub-groups <em>proportional </em>to their size and then these samples <em>combined </em>together to create sample of the study.
Since there are three towns with people from different occupations ( retirees,business owners, office workers), it is better to use stratified sampling method.
Here, we are required bro determine how many worker Esther needs to employ to pick the same 600kg of onions in 3 hours as compared to 4 hours from last year.
This year, she needs to employ 32 workers to pick a total of 600kg of onions in 3 hours.
According to the data given, the total quantity of onions to be picked still remains 600 kg as from last year, only that she needs it done in 3 hours now.
Therefore,
- Since 24 workers finished the work in 4 hours,
- This means that 96 workers are needed to finish the work in 1 hour( from 24×4 = 96).
Therefore, since the work needs to be done in 3 hours this year, This means that it can be shared between X no. of workers.
Therefore, this year she needs to employ 32 workers to pick a total of 600kg of onions in 3 hours.
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