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In a job fair, 3000 applicants applied for a job. Their mean age was found to be 28 with a standard deviation of 4 years. A.) draw a normal curve distribution showing the z scores and raw scores. B.) Find the age such that 75% are below it. (Normal curve in letter A is the normal curve for letter B).

In a job fair, 3000 applicants applied for a job. Their mean age was found to be 28 with a standard deviation of 4 years. A.) draw a normal curve distribution showing the z scores and raw scores. B.) Find the age such that 75% are below it. (Normal curve in letter A is the normal curve for letter B).

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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STANDARD NORMAL TABLE (Z) Entries in the table give the area under the curve between the mean and z 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 0.0398 0.2 0.0793 0.3 0.1179 0.4 0.1554 0.1 0.0478 0.0517 0.0557 0.0871 0.1255 0.0438 0.0596 0.0636 0.0675 0.0714 0.0753 0.1103 0.1480 0.0832 0.0910 0.0948 0.0987 0.1026 0.1064 0.1141 0.1217 0.1293 0.1331 0.1368 0.1406 0.1443 0.1517 0.1700 0.2054 0.1879 0.2224 0.1591 0.1628 0.1664 0.1736 0.1772 0.1808 0.1844 0.5 0.1915 0.1950 0.1985 0.2019 0.2088 0.2123 0.2157 0.2190 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 0.8 0.2881 0.2910 0.2939 0.2969 0.2995 0.3023 0.3051 0.3078 0.3106 0.3133 0.9 1.0 0.3212 0.3238 0.3264 0.3461 0.3686 0.3186 0.3289 0.3340 0.3365 0.3389 0.3529 0.3159 0.3315 0.3413 0.3438 0.3485 0.3508 0.3513 0.3554 0.3577 0.3621 1.1 1.2 1.3 0.3643 0.3665 0.3708 0.3729 0.3749 0.3770 0.3790 0.3810 0.3830 0.3849 0.3869 0.3907 0.4082 0.4099 0.3888 0.3925 0.3944 0.3962 0.3980 0.3997 0.4015 0.4032 0.4049 0.4066 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 1.7 1.8 0.4452 0.4463 0.4474 0.4484 0.4495 0.4505 0.4515 0.4525 0.4535 0.4545 0.4554 0.4641 0.4564 0.4573 0.4582 0.4591 0.4599 0.4608 0.4616 0.4625 0.4633 0.4649 0.4656 0.4664 0.4671 0.4678 0.4686 0.4693 0.4699 0.4706 1.9 2.0 0.4772 2.1 2.2 0.4861 0.4719 0.4778 0.4713 0.4726 0.4732 0.4738 0.4744 0.4750 0.4756 0.4761 0.4767 0.4783 0.4788 0.4793 0.4798 0.4842 0.4803 0.4808 0.4812 0.4817 0.4838 0.4875 0.4821 0.4826 0.4830 0.4834 0.4846 0.4850 0.4854 0.4857 0.4864 0.4868 0.4871 0.4878 0.4881 0.4884 0.4887 0.4890 2.3 2.4 2.5 0.4893 0.4918 0.4896 0.4898 0.4901 0.4904 0.4906 0.4909 0.4911 0.4913 0.4916 0.4920 0.4922 0.4925 0.4927 0.4929 0.4931 0.4932 0.4934 0.4936 0.4938 0.4953 0.4965 0.4941 0.4956 0.4940 0.4945 0.4959 0.4943 0.4946 0.4948 0.4949 0.4951 0.4952 2.6 0.4955 0.4966 0.4975 0.4957 0.4960 0.4961 0.4962 0.4963 0.4964 2.7 0.4967 0.4968 0.4969 0.4970 0.4971 0.4972 0.4973 0.4974 2.8 2.9 3.0 3.1 3.2 3.3 0.4995 3.4 0.4997 0.4974 0.4976 0.4977 0.4977 0.4978 0.4979 0.4979 0.4980 0.4981 0.4981 0.4982 0.4982 0.4983 0.4984 0.4984 0.4985 0.4985 0.4986 0.4986 0.4987 0.4987 0.4987 0.4988 0.4988 0.4989 0.4989 0.4989 0.4990 0.4990 0.4991 0.4991 0.4992 0.4994 0.4994 0.4990 0.4991 0.4992 0.4992 0.4992 0.4993 0.4993 0.4993 0.4995 0.4993 0.4994 0.4994 0.4994 0.4995 0.4995 0.4995 0.4995 0.4996 0.4996 0.4996 0.4996 0.4996 0.4996 0.4997 0.4997 0.4997 0.4997 0.4997 0.4997 0.4997 0.4997 0.4997 0.4998
Transcribed Image Text:STANDARD NORMAL TABLE (Z) Entries in the table give the area under the curve between the mean and z 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 0.0398 0.2 0.0793 0.3 0.1179 0.4 0.1554 0.1 0.0478 0.0517 0.0557 0.0871 0.1255 0.0438 0.0596 0.0636 0.0675 0.0714 0.0753 0.1103 0.1480 0.0832 0.0910 0.0948 0.0987 0.1026 0.1064 0.1141 0.1217 0.1293 0.1331 0.1368 0.1406 0.1443 0.1517 0.1700 0.2054 0.1879 0.2224 0.1591 0.1628 0.1664 0.1736 0.1772 0.1808 0.1844 0.5 0.1915 0.1950 0.1985 0.2019 0.2088 0.2123 0.2157 0.2190 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 0.8 0.2881 0.2910 0.2939 0.2969 0.2995 0.3023 0.3051 0.3078 0.3106 0.3133 0.9 1.0 0.3212 0.3238 0.3264 0.3461 0.3686 0.3186 0.3289 0.3340 0.3365 0.3389 0.3529 0.3159 0.3315 0.3413 0.3438 0.3485 0.3508 0.3513 0.3554 0.3577 0.3621 1.1 1.2 1.3 0.3643 0.3665 0.3708 0.3729 0.3749 0.3770 0.3790 0.3810 0.3830 0.3849 0.3869 0.3907 0.4082 0.4099 0.3888 0.3925 0.3944 0.3962 0.3980 0.3997 0.4015 0.4032 0.4049 0.4066 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 1.7 1.8 0.4452 0.4463 0.4474 0.4484 0.4495 0.4505 0.4515 0.4525 0.4535 0.4545 0.4554 0.4641 0.4564 0.4573 0.4582 0.4591 0.4599 0.4608 0.4616 0.4625 0.4633 0.4649 0.4656 0.4664 0.4671 0.4678 0.4686 0.4693 0.4699 0.4706 1.9 2.0 0.4772 2.1 2.2 0.4861 0.4719 0.4778 0.4713 0.4726 0.4732 0.4738 0.4744 0.4750 0.4756 0.4761 0.4767 0.4783 0.4788 0.4793 0.4798 0.4842 0.4803 0.4808 0.4812 0.4817 0.4838 0.4875 0.4821 0.4826 0.4830 0.4834 0.4846 0.4850 0.4854 0.4857 0.4864 0.4868 0.4871 0.4878 0.4881 0.4884 0.4887 0.4890 2.3 2.4 2.5 0.4893 0.4918 0.4896 0.4898 0.4901 0.4904 0.4906 0.4909 0.4911 0.4913 0.4916 0.4920 0.4922 0.4925 0.4927 0.4929 0.4931 0.4932 0.4934 0.4936 0.4938 0.4953 0.4965 0.4941 0.4956 0.4940 0.4945 0.4959 0.4943 0.4946 0.4948 0.4949 0.4951 0.4952 2.6 0.4955 0.4966 0.4975 0.4957 0.4960 0.4961 0.4962 0.4963 0.4964 2.7 0.4967 0.4968 0.4969 0.4970 0.4971 0.4972 0.4973 0.4974 2.8 2.9 3.0 3.1 3.2 3.3 0.4995 3.4 0.4997 0.4974 0.4976 0.4977 0.4977 0.4978 0.4979 0.4979 0.4980 0.4981 0.4981 0.4982 0.4982 0.4983 0.4984 0.4984 0.4985 0.4985 0.4986 0.4986 0.4987 0.4987 0.4987 0.4988 0.4988 0.4989 0.4989 0.4989 0.4990 0.4990 0.4991 0.4991 0.4992 0.4994 0.4994 0.4990 0.4991 0.4992 0.4992 0.4992 0.4993 0.4993 0.4993 0.4995 0.4993 0.4994 0.4994 0.4994 0.4995 0.4995 0.4995 0.4995 0.4996 0.4996 0.4996 0.4996 0.4996 0.4996 0.4997 0.4997 0.4997 0.4997 0.4997 0.4997 0.4997 0.4997 0.4997 0.4998
Solve the following by concept of normal distribution and graph clearly. Show your complete solution and write clearly and readable. Thank you. In a job fair, 3000 applicants applied for a job. Their mean age was found to be 28 with a standard deviation of 4 years. A.) draw a normal curve distribution showing the z scores and raw scores. B.) Find the age such that 75% are below it. (Normal curve in letter A is the normal curve for letter B).
Transcribed Image Text:Solve the following by concept of normal distribution and graph clearly. Show your complete solution and write clearly and readable. Thank you. In a job fair, 3000 applicants applied for a job. Their mean age was found to be 28 with a standard deviation of 4 years. A.) draw a normal curve distribution showing the z scores and raw scores. B.) Find the age such that 75% are below it. (Normal curve in letter A is the normal curve for letter B).
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