Author: Anonymous

There are around _______  described insect species.

In a certain state, a survey of 600 workers showed that 35% belonged to a union.  Find the 95% confidence interval for the proportion of workers who belong to a union.

Grabbing / predatory legs are known as ________.

The thickest layer of the cuticle is the

The more recent conservative estimates of the total amount of insect species (including undescribed) is

The upper surface of the body is the _________.

The following side-by-side stemplot compares the distributions of percentage growth in population between eastern and western states.   Question: What are the approximate shapes of the distributions, respectively?

If a player rolls two dice and gets a sum of 2 or 12, she wins $20.  If the person gets a sum of 7, she wins $5.  The cost to play the game is $3.  Find the expected value of the game. (Note: If you are rounding intermediate steps, round to 4 decimal places.)

Consider the following random sample: 6, -15, 3, 20, 19, -1, 16, 3   Find the mean rounding to three decimal places.

Suppose that for X = net amount won or lost in a lottery game, the expected value is E(X) = -$0.50.  What is the correct interpretation of this value?