Read the following scenario and complete each of the four problem sets below:Â Â

Suppose the distribution below represents the probability of a person to make a certain grade in Chemistry 101, where x = the letter grade of the student in the class (A=4, B=3, C=2, D=1, F=0).Â Â Â

Â

XÂ Â Â Â Â Â Â Â Â 0Â Â Â Â Â 1Â Â Â Â Â 2Â Â Â Â 3Â Â Â Â 4

P(X) 0.08 0.22 0.34 0.21 0.15

1. Is this an example of a valid probability distribution? Explain your answer.Â

2. Determine the probability that a student selected at random would make a C or higher in Chemistry 101.Â

3. Determine the mean and standard deviation of the grade distribution.Â Â

4. Make a NEW table that shows only the probability of students passing or failing (i.e. receiving an F) Chemistry 101.Â Â

5. â€œA professor has 30 students in his or her Chemistry 101 course and wants to determine the probability that a certain number of these 30 students will pass his or her course.â€Â Does this represent a binomial experiment? Explain your answer.Â

Subject | Mathematics |

Due By (Pacific Time) | 05/26/2015 10:00 pm |

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