(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)
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)
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)
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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