Question

Assume that the speed of automobiles on an expressway during rush hour is normally distributed with a mean of 64 mph and a standard deviation of 5 mph. If 200 cars are selected at random, how many will be traveling slower than 57 mph? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. Normal Distribution Table Of the 200 cars, approximately cars will be traveling slower than 57 mph. (Round to the nearest whole number as needed.) Table of Areas to the Left of When Is Negative z .00 .01 .02 .03 .04 .05 .06 .07 .08 .09 -3.4 0003 0003 0003 0003 0003 0003 0003 0003 0003 0002 -3.3 0005 0005 0005 0004 0004 0004 0004 0004 0004 0003 -3.2 0007 0007 0006 0006 0006 0006 0006 0005 0005 0005 -3.1 0010 0009 0009 0009 0008 0008 0008 0008 0007 0007 -3.0 0013 0013 0013 0012 0012 0011 0011 0011 0010 0010 -2.9 0019 0018 0018 0017 0016 0016 0015 0015 0014 0014 -2.8 0026 0025 0024 0023 0023 0022 0021 0021 0020 0019 -2.7 0035 0034 0033 0032 0031 0030 0029 0028 0027 0026 -2.6 0047 0045 0044 0043 0041 0040 0039 0038 0037 0036 -2.5 0062 0060 0059 0057 0055 0054 0052 0051 0049 0048 -2.4 0082 0080 0078 0075 0073 0071 0069 0068 0066 0064 -2.3 0107 0104 0102 0099 0096 0094 0091 0089 0087 0084 -2.2 0139 0136 0132 0129 0125 0122 0119 0116 0113 0110 -2.1 0179 0174 0170 0166 0162 0158 0154 0150 0146 0143 -2.0 0228 0222 0217 0212 0207 0202 0197 0192 0188 0183 -1.9 0287 0281 0274 0268 0262 0256 0250 0244 0239 0233 -1.8 0359 0351 0344 0336 0329 0322 0314 0307 0301 0294 -1.7 0446 0436 0427 0418 0409 0401 0392 0384 0375 0367 -1.6 0548 0537 0526 0516 0505 0495 0485 0475 0465 0455 -1.5 0668 0655 0643 0630 0618 0606 0594 0582 0571 0559 -1.4 0808 0793 0778 0764 0749 0735 0721 0708 0694 0681 -1.3 0968 0951 0934 0918 0901 0885 0869 0853 0838 0823 -1.2 1151 1131 1112 1093 1075 1056 1038 1020 1003 0985

          Assume that the speed of automobiles on an expressway during rush hour is normally distributed with a mean of 64 mph and a standard deviation of 5 mph. If 200 cars are selected at random, how many will be traveling slower than 57 mph?
Click here to view page 1 of the standard normal distribution table.
Click here to view page 2 of the standard normal distribution table.
Normal Distribution Table
Of the 200 cars, approximately  cars will be traveling slower than 57 mph.
(Round to the nearest whole number as needed.)
Table of Areas to the Left of  When Is Negative
z .00 .01 .02 .03 .04 .05 .06 .07 .08 .09
-3.4 0003 0003 0003 0003 0003 0003 0003 0003 0003 0002
-3.3 0005 0005 0005 0004 0004 0004 0004 0004 0004 0003
-3.2 0007 0007 0006 0006 0006 0006 0006 0005 0005 0005
-3.1 0010 0009 0009 0009 0008 0008 0008 0008 0007 0007
-3.0 0013 0013 0013 0012 0012 0011 0011 0011 0010 0010
-2.9 0019 0018 0018 0017 0016 0016 0015 0015 0014 0014
-2.8 0026 0025 0024 0023 0023 0022 0021 0021 0020 0019
-2.7 0035 0034 0033 0032 0031 0030 0029 0028 0027 0026
-2.6 0047 0045 0044 0043 0041 0040 0039 0038 0037 0036
-2.5 0062 0060 0059 0057 0055 0054 0052 0051 0049 0048
-2.4 0082 0080 0078 0075 0073 0071 0069 0068 0066 0064
-2.3 0107 0104 0102 0099 0096 0094 0091 0089 0087 0084
-2.2 0139 0136 0132 0129 0125 0122 0119 0116 0113 0110
-2.1 0179 0174 0170 0166 0162 0158 0154 0150 0146 0143
-2.0 0228 0222 0217 0212 0207 0202 0197 0192 0188 0183
-1.9 0287 0281 0274 0268 0262 0256 0250 0244 0239 0233
-1.8 0359 0351 0344 0336 0329 0322 0314 0307 0301 0294
-1.7 0446 0436 0427 0418 0409 0401 0392 0384 0375 0367
-1.6 0548 0537 0526 0516 0505 0495 0485 0475 0465 0455
-1.5 0668 0655 0643 0630 0618 0606 0594 0582 0571 0559
-1.4 0808 0793 0778 0764 0749 0735 0721 0708 0694 0681
-1.3 0968 0951 0934 0918 0901 0885 0869 0853 0838 0823
-1.2 1151 1131 1112 1093 1075 1056 1038 1020 1003 0985

assume that the speed of automobiles on an expressway during rush hour is normally distributed with a mean of 64 mph and a standard deviation of 5 mph if 200 cars are selected at random how 35864

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