Esther has a farm. Last year she employed 24 workers to pick her vegetables.
They picked a total of 600 kg of onions in 4 hours.
This year she needs to employ enough workers to pick
600 kg of onions in 3 hours.
Work out how many workers Esther
needs. (3)
Write your answer in the box below.
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According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.