1- True or False: [20 Pts, 5 per question] (T or F) The mode is a measure ofdispersion of a data set. (T or F) An object can experience two or more forces and not accelerate. c. (T or F) If a tape measure always reads 0.1 cm high, then it can never be used to make precise measurements. d. (T or F) Repeating the measurement can reduce systematic errors in a measurement. 2- {5 Pts) The amount of mustard dispensed from a machine at the Hotdog Emporium is normally distributed with a mean of 0.9 ounce and a standard deviation of 0.1 ounce. If the machine is used 500 times, approximately how many times will it be expected to dispense l or more ounces of mustard? a 5 b. 16 c. 80 d 100 3- {5 Pts) The average speed of a car is 65 mph with a standard deviation of 4. Find the probability that the speed is less than 60 mph. a. 0.1056 b. 0.8944 0.3944 d. 0.2012 4- {5 Pts) The force of gravity on the moon is 1/6 as large as on the earth. How does free-fall acceleration on the moon compare with free-fall acceleration on the earth? Free-fall acceleration will be....... The same on the earth and moon. 0) b. 6 times larger on the moon. 1/3 as large on the moon. 51 1/6 as large on the moon. 5- [5 Pts) The equation y = 3b\" represents.... straight line on semi-log graph paper quadratic curve on rectilinear paper c. straight line on log-log graph paper d. an oscillating curve on log-log graph paper 6- {5 Pts) Find the area under the standard normal curve between 2 = -2 and z = 2. 0.95 0.99 c. 0.4472 d. 0.4987 7- {5 Pts} What is a difference between an object's speed and velocity? a Speed includes direction as well as the rate of travel. b. Velocity includes time during which travel occurred. c. Velocity includes the direction of travel whereas speed does not. d. There is no difference. 8- {5 Pts] If v were plotted against it on a log-log paper and formed a straight line where m = 7 and b = 2. The equation could be written: a y = 7x + 2 b. y = 2 log 7x c. y=7e2" d. y = 2 e?\" 9- {5 Pts} What is 14.56f2.2? Make sure the reported answers is rounded properly. a. 6.618 b. 6.62 c. 6.6 d. 6 10- {5 Pts} Which of the following statements is true about friction? a. Static friction is less than kinetic friction. b. Friction acts in the opposite direction of the normal force. :2. Friction exists only when an object is in motion. d. Friction always opposes the motion or attempted motion. 11- {5 Pts} An astronaut weighs 685 N on earth. What would the astronaut's weight be on Jupiter where g = 25.9 mfsz? a. 1810 N b. 17710 N C. 69.9 N d. 2.70 N 12- {5 Pts} Which of the following are true statements? |. Normal curves with different means can be centered around the same numbers. II. The area under a normal curve is always equal to one, no matter what the mean and standard deviation are. I\". The smaller the standard deviation of a normal curve, the shorter and wider the graph. a. II only b. H and \"I c. land H d. I, II, and III 13- {10 Pts) The average score of a statistics test for a class is 85 and standard deviation is 10. Find the probability of a random score falling between 75 and 95. 14- (10 Pts] What is the final velocity of an apple if it falls from a 100 m-tree? g = 9.8 mi:2 15- (5 Pts) Find the mean, median, and mode of the following numbers: 33 91 84 88 81 89 88 32 83 86 STANDARD NORMAL TABLE (2) Entries in the table give the area under the curve between the mean and 2 standard deviations above the mean. For example, for z = 1.25 the area under the curve between the mean (0) and z is 0.3944. 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.0 0.0000 0.0040 0.0080 0.0120 0.0160 0.0190 0.0239 0.0279 0.0319 0.0359 0.1 0.0398 0.0438 0.0478 0.0517 0.0557 0.0596 0.0636 0.0675 0.0714 0.0753 0.2 0.0793 0.0832 0.0871 0.0910 0.0948 0.0987 0.1026 0.1064 0.1103 0.1141 0.3 0.1179 0.1217 0.1255 0.1293 0.1331 0.1368 0.1406 0.1443 0.1480 0.1517 0.4 0.1554 0.1591 0.1628 0.1664 0.1700 0.1736 0.1772 0.1808 0.1844 0.1879 0.5 0.1915 0.1950 0.1985 0.2019 0.2054 0.2088 0.2123 0.2157 0.2190 0.2224 0.6 0.2257 0.2291 0.2324 0.2357 0.2389 0.2422 0.2454 0.2486 0.2517 0.2549 0.7 0.2580 0.2611 0.2642 0.2673 0.2704 0.2734 0.2764 0.2794 0.2823 0.2852 0.3 0.2881 0.2910 0.2939 0.2969 0.2995 0.3023 0.3051 0.3078 0.3106 0.3133 0.9 0.3159 0.3186 0.3212 0.3238 0.3264 0.3289 0.3315 0.3340 0.3365 0.3389 1.0 0.3413 0.3438 0.3461 0.3485 0.3508 0.3513 0.3554 0.3577 0.3529 0.3621 1.1 0.3643 0.3665 0.3686 0.3708 0.3729 0.3749 0.3770 0.3790 0.3810 0.3830 0.3849 0.3869 0.3888 0.3907 0.3925 0.3944 0.3962 0.3980 0.3997 0.4015 1 2 1.3 0.4032 0.4049 0.4066 0.4082 0.4099 0.4115 0.4131 0.4147 0.4162 0.4177 1.4 0.4192 0.4207 0.4222 0.4236 0.4251 0.4265 0.4279 0.4292 0.4306 0.4319 1 5 0.4332 0.4345 0.4357 0.4370 0.4382 0.4394 0.4406 0.4418 0.4429 0.4441 1.6 0.4452 0.4463 0.4474 0.4484 0.4495 0.4505 0.4515 0.4525 0.4535 0.4545 1.7 0.4554 0.4564 0.4573 0.4582 0.4591 0.4599 0.4608 0.4616 0.4625 0.4633 1.8 0.4641 0.4649 0.4656 0.4664 0.4671 0.4676 0.4686 0.4693 0.4699 0.4706 1.9 0.4713 0.4719 0.4726 0.4732 0.4738 0.4744 0.4750 0.4756 0.4761 0.4767 2.0 0.4772 0.4778 0.4783 0.4788 0.4793 0.4798 0.4803 0.4808 0.4812 0.4817 2.1 0.4821 0.4826 0.4830 0.4834 0.4838 0.4842 0.4846 0.4850 0.4854 0.4857 2.2 0.4861 0.4864 0.4868 0.4871 0.4875 0.4878 0.4881 0.4884 0.4887 0.4890 2.3 0.4893 0.4896 0.4898 0.4901 0.4904 0.4906 0.4909 0.4911 0.4913 0.4916 2.4 0.4918 0.4920 0.4922 0.4925 0.4927 0.4929 0.4931 0.4932 0.4934 0.4936 2.5 0.4938 0.4940 0.4941 0.4943 0.4945 0.4946 0.4948 0.4949 0.4951 0.4952 2.6 0.4953 0.4955 0.4956 0.4957 0.4959 0.4960 0.4961 0.4962 0.4963 0.4964 2.7 0.4965 0.4966 0.4967 0.4968 0.4969 0.4970 0.4971 0.4972 0.4973 0.4974 2.3 0.4974 0.4975 0.4976 0.4977 0.4977 0.4978 0.4979 0.4979 0.4980 0.4981 2.9 0.4981 0.4982 0.4982 0.4983 0.4984 0.4984 0.4985 0.4985 0.4986 0.4986 3.0 0.4987 0.4987 0.4987 0.4988 0.4988 0.4989 0.4989 0.4989 0.4990 0.4990 3.1 0.4990 0.4991 0.4991 0.4991 0.4992 0.4992 0.4992 0.4992 0.4993 0.4993 3.2 0.4993 0.4993 0.4994 0.4994 0.4994 0.4994 0.4994 0.4995 0.4995 0.4995 3.3 0.4995 0.4995 0.4995 0.4996 0.4996 0.4996 0.4996 0.4996 0.4996 0.4997 3.4 0.4997 0.4997 0.4997 0.4997 0.4997 0.4997 0.4997 0.4997 0.4997 0.4998