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Exhibit 1 Michael’s Compute-All, a national computer retailer, has kept a record of the number of laptop computers they have sold for a period of 80 days. Their sales records are shown below: Number of Laptops Sold Number of Days 0 – 19 5 20 – 39 15 40 – 59 30 60 – 79 20 80 – 99 10 Total 80  

Part II: Problems (Answers are graded on the reasoning used to arrive at an answer, not simply on the answer. Thus, show the reasons and calculation process! If your answer is not an integer, round off results at 4 decimal places.) (89 points total)

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

Refer to Exhibit 1. The percentage of days in which the company sold at least 40 laptops is

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

 After a zygote is formed from fertilization, it will undergo mitosis. This process results in a hollow ball of cells called a ___________________.

Which of the following effects is a type of genetic drift that occurs due to a drastic reduction in population size? The leftover members of the population are responsible for re-populating the species, which will result in evolutionary changes due to the smaller sample size.

Many related species can have certain similar characteristics that serve different functions for each species. An example of this is vertebral forearms. Vertebrate forearms are an example of what kind of structure?

True or False: In the taxonomy hierarchy, genus is larger than a phylum.

Which of the following invertebrate phyla does not have a complete digestive tract?