Question

In: Statistics and Probability

The world's smallest mammal is the bumblebee bat. The mean weight of 100 randomly selected bumblebee...

The world's smallest mammal is the bumblebee bat. The mean weight of 100 randomly selected bumblebee bats is 1.659 grams, with a standard deviation of 0.264 grams.

Part 2 Dr. Clifford Jones claims that the mean weight of bumblebee bats is 1.7 grams. We are interested in whether it's less than he claims. Using the t-distribution technique, is there evidence that bumblebee bats weight less on average than he claims, at each of the following levels?

The degrees of freedom are df =

The test-statistic t = (positive version of t, three places after decimal) =

Solutions

Expert Solution

Conclusion: There is sufficient evidence to support the claims i.e. there is no evidence that bumblebee bats weight less on average than he claims.


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