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MTH 221 Statistics for Decision Making Final Exam

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MTH 221 Statistics for Decision Making Final Exam

1. Question:

(TCO 9) The annual Salary of an electrical engineer is given in terms of the years of experience by the table below. Find the equation of linear regression for the above data and obtain the expected salary for an engineer with 45 years of experience. Round to the nearest $100.

Your Answer:

97,100

88,300

56,700

92,800

(TCO 5) A company produces window frames. Based on a statistical analysis, we found that 15% of their product is defective. They have shipped 10 windows to one of their customers. The customer is worried about the probability of having defective frames. Choose the best answer of the following:

Your Answer:

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

6 3. Question:

(TCO 5) A test is composed of six multiple choice questions where each question has 4 choices. If the answer choices for each question are equally likely, find the probability of answering 3 OR 4 questions correctly.

Your Answer:

0.131836

0.032959

0.004639

0.164795

(TCO 5) It has been recorded that the average number of errors in a newspaper is 4 mistakes per page. What is the probability of having 1 or 2 errors per page?

Your Answer:

0.073263

0.146525

0.219788

0.219788

(TCO 2) The median height of the players on a high school basketball team is 68 inches. What does this tell you about the typical height of a player on this team?

Your Answer:

Half the players are taller than 68 inches...

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