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I what is the 82 nd percentile of the time spent by

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i. What is the 82 nd  percentile of the time spent by patients waiting for treatment at the  emergency room? Give the EXACT value. DO NOT ROUND-OFF the value. Label  your answer properly. Write the interpretation of the value of the 82 nd  percentile in the  context of the problem. 
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5 KRISTA CLEARY – SECTION 1 i. 76 mins waiting  4) Answer Exercise 30 of Section 2.1 on page 47.  a.    b.    c.    d. False, Album downloads have increased from 2014 to 2015, all other categories  have decreased.  5) Answer Exercise 53 of Section 2.2 on page 68 a. No, this is not the correct histogram.  b. Yes, this is the correct histogram for this set of data.  c. No, this is not the correct histogram 6) The following table gives the frequency distribution of the total miles driven during 2015 by 300  car owners.  Miles Driven in 2015 (in  thousand)  Number of Car  Owners  0.00 to 4.99  5.00 to 9.99  26 
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6 KRISTA CLEARY – SECTION 1 10.00 to 14.99  59  15.00 to 19.99  71  20.00 to 24.99  62  25.00 to 29.99  39  30.00 to 34.99  22  35.00 to 39.99  14  a. How many classes are in the given data distribution table above? Label your answer  properly.  i. There are 8 classes in this distribution table.  b. What is the value of the common class width based on the given data distribution table? i. The common class width is 5.    c. Find the approximate value of the mean, variance, and standard deviation of the total  miles driven in 2015 based on the given data distribution table. Label your answer  properly. Round-off your answer to FOUR (4) decimal places.  i. Mean: 37.5 Car owners  ii. Variance: 577.4286 iii. Standard Deviation: 22.4478 
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7 KRISTA CLEARY – SECTION 1 d. Draw the relative frequency histogram based on the given data distribution table. e. Based on the resulting relative frequency histogram, what is the shape of the distribution  of the total miles? i. The distribution of the histogram is symmetric.  7) Answer Exercise 25 of Section 4.2 on page 180.  a. Least squared regression line: y.hat = 82.9071 + 0.5930*x b.    c. I predict that if the temperature of the left foot were to change by two degrees,  the right foot’s temperature would change about the same amount.  d. If the patient’s left foot was 81 ° F, I predict that the patient’s right foot would be  about 78 ° F.    8) Answer Exercise 34 of Section 4.2 on page 181 of textbook. 
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8 KRISTA CLEARY – SECTION 1 a. Least squared regression line: y.hat = 3.7923 + 0.0806*x b. If a bird weighs 300 grams, the predicted value of the bird’s brain would be  27.4891 grams.  9) The following are the heights (measured to the nearest 2 cm) and the weights (measured to the  nearest kg) of 10 men:  a. Draw the scatterplot in  Excel to determine the 
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