1. (TCO 9) The hours of study and the final exam grades have this type of relationship: ŷ = 5.76(hours) + 35.31. Based on this linear regression equation, estimate the expected grade for a student spending 8 hours studying. Round your answer to two decimal places. (Points : 6) 46.08 81.39 91.45 85.29 2. (TCO 5) Historical sales records show that 40% of all customers who enter a discount department store make a purchase. We are interested in calculating the probability that 3 of 5 customers make purchase. Choose the best answer of the following: (Points : 6) This is an example of a Poisson probability experiment This is an example of a Binomial probability experiment This is neither a Poisson nor a Binomial probability experiment Not enough information to determine the type of experiment 3. (TCO 5) Microfracture knee surgery has a 75% chance of success on patients with degenerative knees. The surgery is performed on 5 patients. Find the probability of the surgery being successful on 3 or 4 patients? (Points : 6) 0.103516 0.659180 0.762695 0.642875 4. (TCO 5) It has been recorded that 10 people get killed by shark attack every year. What is the probability of having 7 or 8 people get killed by shark attack this year? (Points : 6) 0.130141 0.202678 0.220221 0.797321 5. (TCO 2) The mode teaching hours for a full time faculty at a state university is eight hours per week. What does this tell you about the typical teaching hours for full time faculty at that university? (Points : 6)
Half the full time faculties teach less than eight hours per week while half teaches more than eight hours per week. The average teaching hours for full time faculty is eight hours per week.
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