1.

A biologist was interested in the number of times a field cricket chirps each minute on a sunny day. He randomly selected 100 field crickets from a garden, and found that the mean number of chirps per minute was 112, and the margin of error for this estimate was 6 chirps. The bilogist would like to repeat the procedure and attempt to reduce the margin of error. Which of the following samples would most likely result in a smaller margin of error for the estimated mean number of times a field cricket chirps each minute on a sunny day?

Answer»

50 RANDOMLY SELECTED CRICKETS from the same garden.
50 randomly selected FIELD cricketsfrom the same garden.
200 randomly selected from the same garden.
200 randomly selected field crickets from the same garden.

Answer :D


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