Question 1

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The wingspans of Green Cicadas are normally distributed. Two populations of cicadas were compared to find out if there was any difference in the mean wingspans.

A sample from Population 1 (n= 21) was found to have an average wingspan of 44.8 mm. The population standard deviation is 3.0cm.

A sample from Population 2 (n= 25) was found to have an average wingspan of 39.2 mm. The population standard deviation is 3.1cm.

Calculate the test statistical value, rounded to 2 decimal place.

asked by guest
on Nov 24, 2024 at 4:48 am



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