The following is a list of GPA ranges and frequencies from a high school.Use 1.5 as the midpoint of the 2.0 or less category. 
a.What is the mean GPA?
b.What is the sample standard deviation of the GPA
c.Assuming the distribution is bell shaped what percentage of the students would have GPA's between 1.5 and 3.9? Does this make sense given what you know about GPA's?
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A medication used to manage symptoms associated with coughs due to colds, allergies, or respiratory infections.
Addictive Properties
Characteristics of a substance that lead to compulsive use, despite harmful consequences, often involving physical or psychological dependence.
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Research methods used to identify the location of genes associated with diseases or traits by studying patterns of inheritance in families.
Neurotransmitter Receptor
A protein molecule on a neuron's surface that responds to specific neurotransmitters, allowing for communication between neurons.
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