Stat 200 Final Exam 100% Correct Answers Essay

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STAT 200 Final Exam 100% Correct Answers 1. True or False. Justify for full credit. (25 pts) (a) The normal distribution curve is always symmetric to its mean.

(b) If the variance from a data set is zero, then all the observations in this data set are identical. (c) . of complement the is where, 1) AND(AA A APc c (d) In a hypothesis testing, if the p-value is less than the significance level α, we do not have
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Show all work. Just the answer, without supporting work, will receive no credit. A fair coin is tossed 4 times. 7. How many outcomes are there in the sample space? (5 pts) 8. What is the probability that the third toss is heads, given that the first toss is heads? (10 pts) 9. Let A be the event that the first toss is heads, and B be the event that the third toss is heads. Are A and B independent? Why or why not? ————————————————————————————————————————- Refer to the following situation for Questions 10, 11, and 12. The boxplots below show the real estate values of single family homes in two neighboring cities, in thousands of dollars. For each question, give your answer as one of the following: (a) Tinytown; (b) BigBurg; (c) Both cities have the same value requested; (d) It is impossible to tell using only the given information. Then explain your answer in each case. 10. Which city has greater variability in real estate values? 11. Which city has the greater percentage of households with values $85,000 and over? 12. Which city has a greater percentage of homes with real estate values between $55,000 and $85,000? —————————————————————————————————————— Refer to the following information for Questions 13 and 14. Show all work. Just the answer,
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