Cars arrive randomly at a tollbooth at a rate of 20 cars per 10 minutes during rush hour. What is the probability that exactly five cars will arrive over a five-minute interval during rush hour?

The statistics professor has kept attendance records and recorded the number of absent students per class. The recorded data is displayed in the following bar chart with the frequency of each number of absent students shown above the bars.     How many statistics classes had three or more students absent?

Consider the following cumulative distribution function for the discrete random variable X.   x 1 2 3 4 P(X ≤ x) 0.30 0.44 0.72 1.00   What is the probability that X is greater than 2?

Let A and B be two independent events with P(A) = 0.40 and P(B) = 0.20. Which of the following is correct?

On a recent trip to the grocery store, you were asked by your genetics instructor to bring in 3 examples of genetically modified foods.  What 3 things did you select?  Explain why each would qualify as a GMO.

The longer two species have been evolving on their own, the greater the number of _________ that accumulates between them.

In a population of 25 people, 2 individuals have cystic fibrosis (cc), 5 individuals are known carriers (Cc) and the rest do not carry a cystic fibrosis allele (CC).  What is the allele frequency of the cystic fibrosis allele (c)? 

_____________ occurs when organisms of one genotype mate with each other more often than other genotypes

Population bottlenecks occur when:

A ______________ is all of the alleles in a population.