The price of Japanese Yen "in US dollars" was 0.0089 last month and is 0.0084 today. Which of the following is TRUE given this information? Select one: a. The Japanese Yen has lost value against the US dollar. b. The US dollar has lost value against the Japanese Yen. c. Turning a US dollar into Yen today would give you approximately 5 more Yen today versus the amount of Yen you would have received last month. d. Today, 1000 Japanese Yen can be exchanged into approximately $119. e. Today, 1000 US dollars can be converted into approximately 8.4 Japanese Yen.

1 7.94 111 2 54 2 8.292 119 2 63 3 4.643 96 2 36 4 7.47 115 2 50 5 8.882 117 1 46 6 7.585 101 2 67 7 7.65 129 2 47 8 2.412 82 2 43 9 6 108 1 54 10 8.833 112 2 67 11 7.47 120 1 41 12 5.528 93 1 35 13 7.167 110 2 50 14 7.571 100 1 80 15 4.7 101 1 38 16 8.167 114 1 45 17 7.822 113 1 54 18 7.598 113 1 61 19 4 108 2 42 20 6.231 107 1 72 21 7.643 120 2 54 22 1.76 78 2 58 24 6.419 112 1 53 26 9.648 123 2 69 27 10.7 119 1 56 28 10.58 124 2 60 29 9.429 114 2 64 30 8 120 2 40 31 9.585 120 2 63 32 9.571 106 1 51 33 8.998 124 1 46 34 8.333 102 1 45 35 8.175 114 2 63 36 8 119 2 44 37 9.333 108 1 65 38 9.5 108 2 67 39 9.167 118 2 66 40 10.14 106 1 72 41 9.999 114 1 57 43 10.76 132 2 51 44 9.763 114 2 67 45 9.41 117 2 63 46 9.167 138 2 78 47 9.348 127 2 60 48 8.167 102 2 64 50 3.647 92 2 47 51 3.408 102 1 36 52 3.936 90 2 36 53 7.167 101 2 51 54 7.647 117 2 72 55 .53 90 2 39 56 6.173 87 2 54 57 7.295 94 2 57 58 7.295 122 1 63 59 8.938 101 1 55 60 7.882 118 1 53 61 8.353 120 2 64 62 5.062 108 2 49 63 8.175 104 2 56 64 8.235 109 2 75 65 7.588 122 2 52 68 7.647 100 2 82 69 5.237 101 1 49 71 7.825 117 2 73 72 7.333 91 1 59 74 9.167 130 2 60 76 7.996 103 2 54 77 8.714 95 1 41 78 7.833 106 1 80 79 4.885 89 2 49 80 7.998 118 1 48 83 3.82 74 2 68 84 5.936 91 1 49 85 9 105 1 59 86 9.5 125 1 54 87 6.057 119 2 46 88 6.057 100 1 43 89 6.938 107 2 82

contains information on 78 seventh-grade students. We want to know how well each of IQ score and self-concept score predicts GPA using least-squares regression. We also want to know which of these explanatory variables predicts GPA better. Give numerical measures that answer these questions. (Round your answers to three decimal places.)

1 7.94 111 2 54 2 8.292 119 2 63 3 4.643 96 2 36 4 7.47 115 2 50 5 8.882 117 1 46 6 7.585 101 2 67 7 7.65 129 2 47 8 2.412 82 2 43 9 6 108 1 54 10 8.833 112 2 67 11 7.47 120 1 41 12 5.528 93 1 35 13 7.167 110 2 50 14 7.571 100 1 80 15 4.7 101 1 38 16 8.167 114 1 45 17 7.822 113 1 54 18 7.598 113 1 61 19 4 108 2 42 20 6.231 107 1 72 21 7.643 120 2 54 22 1.76 78 2 58 24 6.419 112 1 53 26 9.648 123 2 69 27 10.7 119 1 56 28 10.58 124 2 60 29 9.429 114 2 64 30 8 120 2 40 31 9.585 120 2 63 32 9.571 106 1 51 33 8.998 124 1 46 34 8.333 102 1 45 35 8.175 114 2 63 36 8 119 2 44 37 9.333 108 1 65 38 9.5 108 2 67 39 9.167 118 2 66 40 10.14 106 1 72 41 9.999 114 1 57 43 10.76 132 2 51 44 9.763 114 2 67 45 9.41 117 2 63 46 9.167 138 2 78 47 9.348 127 2 60 48 8.167 102 2 64 50 3.647 92 2 47 51 3.408 102 1 36 52 3.936 90 2 36 53 7.167 101 2 51 54 7.647 117 2 72 55 .53 90 2 39 56 6.173 87 2 54 57 7.295 94 2 57 58 7.295 122 1 63 59 8.938 101 1 55 60 7.882 118 1 53 61 8.353 120 2 64 62 5.062 108 2 49 63 8.175 104 2 56 64 8.235 109 2 75 65 7.588 122 2 52 68 7.647 100 2 82 69 5.237 101 1 49 71 7.825 117 2 73 72 7.333 91 1 59 74 9.167 130 2 60 76 7.996 103 2 54 77 8.714 95 1 41 78 7.833 106 1 80 79 4.885 89 2 49 80 7.998 118 1 48 83 3.82 74 2 68 84 5.936 91 1 49 85 9 105 1 59 86 9.5 125 1 54 87 6.057 119 2 46 88 6.057 100 1 43 89 6.938 107 2 82

contains information on 78 seventh-grade students. We want to know how well each of IQ score and self-concept score predicts GPA using least-squares regression. We also want to know which of these explanatory variables predicts GPA better. Give numerical measures that answer these questions. (Round your answers to three decimal places.)

A teacher is currently teaching two statistics​ classes, one at​ 8:00 A.M. and the other at​ 10:00 A.M. The accompanying table summarizes the attendance records by showing the probability of the number of absent students per class. Complete parts a and b.

   Probability  
Number of Absent Students 8 A.M. Class 10 A.M. Class

a. Calculate the mean number of students absent for each class.

1. Calculate the mean number of students absent from the​ 8:00 A.M. class.

2. Calculate the mean number of students absent from the​ 10:00 A.M. class.

b) Calculate the standard deviation for the number of students absent for each class.

1. Calculate the standard deviation number of students absent from the​ 8:00 A.M. class.

2. Calculate the standard deviation number of students absent from the​ 10:00 A.M. class.

Multiple choice questions: Circle the correct answer

9) Suppose Host A sends four TCP segments back to back to Host B over a TCP connection. The sequence numbers in the four segments are 70, 90, 110, and 130, respectively. Suppose that the second segment is lost but all the other segments arrive at B. In the acknowledgement that Host B sends to Host A after the fourth segment arrives at B, the acknowledgement number is

(a) 70; (b) 90; (c) 110; (d) 130; (e) None of the above

Consider the molecule CF₃H. Draw the structure for this molecule, then use it to assess each statement. Select all true statements.

James is a college senior who is majoring in Risk Management and Insurance. He owns a high-mileage 1998 Honda Civic that has a market value of $2,800. The current replacement value of his clothes, television sets, stereo set, cell phone, and other property in a rented apartment totals $9,000. He has a waterbed in his rented apartment that has leaked in the past. An avid runner, James runs 5 miles daily in a nearby public park that has the reputation of being very dangerous because of drug dealers, numerous assaults and muggings, and drive-by shootings. For each of the following risks or loss exposures, identify an appropriate risk management technique that could have been used to deal with the exposure. Explain your answer. (3 questions)

1. Liability lawsuit against James arising out of negligent operation of his car

2. Waterbed leak that causes property damage to the apartment

3. Physical assault on James by gang members who are dealing drugs in the park where he runs

1. A standard galvanic cell is constructed with F₂ | F^- and Hg²⁺ | Hg half cell compartments connected by a salt bridge. Which of the following statements are correct?

(Choose all that apply.)

A. The anode compartment is the F₂|F^- compartment.

B. As the cell runs, anions will migrate from the F₂|F^- compartment to the Hg²⁺|Hg compartment.

C. In the external circuit, electrons flow from the F₂|F^- compartment to the Hg²⁺|Hg compartment.

D. The anode compartment is the Hg²⁺|Hg compartment.

E. F₂ is reduced at the cathode.

2. A standard galvanic cell is constructed in which a Cd²⁺ | Cd half cell acts as the cathode. Which of the following statements are correct?

(Choose all that apply.)

A. Mg²⁺|Mg could be the other standard half cell.

B. The cathode reaction is Cd -> Cd²⁺ + 2e^-.

C. In the external circuit, electrons flow from the other compartment to the Cd²⁺|Cd compartment.

D. Fe³⁺|Fe²⁺ could be the other standard half cell.

E. As the cell runs, anions will migrate from the other compartment to the Cd²⁺|Cd compartment

A business owner needs to run a gas line from his business to a gas main as shown in the accompanying diagram. The main is 30-ft down the 12-ft wide driveway and on the opposite side. A plumber charges $4 per foot alongside the driveway and $5 per foot for underneath the driveway.

a) What will be the cost if the plumber runs the gas line entirely under the driveway along the diagonal of the 30-ft by 12-ft rectangle? b) What will be the cost if the plumber runs the gas line 30-ft alongside the driveway and then 12-ft straight across? c) The plumber claims that he can do the job for $160 by going alongside the driveway for some distance and then going under the drive diagonally to the terminal. Find x, the distance alongside the driveway. d) Write the cost as a function of x and sketch the graph of the function. e) Use the minimum feature of a graphing calculator to find the approximate value for x that will minimize the cost. f) What is the minimum cost (to the nearest cent) for which the job can be done?

The following data (read the data down first and then over to the right) represent the weekly accounts receivable balance (in $1000) of a hardware distributor over a 30-week period.

1. Set up a (individuals) control chart on the accounts balance and a moving range chart (i.e. calculate the appropriate centerline and control limits). Plot the charts and supplement the individuals control chart with supplementary runs rules (i.e. apply the Western Electric runs rules for detecting non-random patterns on control charts). Note: Use the X-Y chart in Excel to plot the control charts.
2. Were there any out-of-control points identified in part (a)? If so, assume a special-cause explanation can be given to the associated point(s).
3. From the result of part (b), what are the appropriate prospective/trial limits for the charts?