Essay Question: 2(b). What is the probability of finding a female customer?  The probability of finding a female customer is [Select1].

Refer to Exhibit 1. The class width of the above distribution is

Essay Question: 3(b). Compute the mean yearly salary. 

Essay Question: 4(a). Comment on the shape of the distribution.  The shape of the distribution is [select1].

Refer to Table 1. What is the cumulative relative frequency of the 2nd class?

What are the two main groups of invertebrate chordates?

What type of speciation occurs when gene flow is blocked due to a geographical barrier?

 Which of the following is not one of the four main groups of arthropods?

 Which of the following groups of arthropods have four pairs of walking legs and one pair of feeding appendages? They typically live on land. Some examples include scorpions, spiders, and ticks.

Describe a vestigial structure and give one example.