If 39 different pilots are randomly selected, find the probability that their mean weight is between 130 lb and 191 lb. The probability is approximately what ? Please answer question b.
HW Score: 50%, 4 of 8 points Save Question 5, 6.4.17-T Homework: Section 6.4 Homework Part 2 of 3 O Points: 0 of 1 An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 lb and 191 lb. The new population of pilots has normally distributed weights with a mean of 135 lb and a standard deviation of 28.3 lb. Click here to view page 1 of the standard normal distribution. Click here to view page 2 of the standard normal distribution, - X - X a Standard normal distribution table (page 2) Standard normal distribution table (page 1) D Standard Normal (z) Distribution: Cumulative Area from the LEFT Standard Normal (z) Distribution: Cumulative Area from the LEFT 05 .06 .07 OR 09 109 .00 ,01 .02 .03 .04 .00 .01 .02 .03 .04 .05 .06 .07 .08 .5160 5000 5080 .5239 5279 5319 .5359 .5120 5199 0.0 5040 .5557 5596 5636 .5675 5714 5753 -3.50 0.1 5398 5438 5478 5517 6103 6141 and 5793 .5832 5871 5910 .5948 .5987 6026 6064 .0001 0.2 6517 lower .0003 .0003 0003 .0002 6368 6406 6443 6480 .0003 .0003 .0003 0003 0003 0003 0.3 6179 6217 $255 6293 6331 .6736 .6772 .6808 6844 .6879 -3.4 .0004 .0004 10004 0904 .0004 .0904 .0005 0.4 6554 6591 6628 6664 .6700 0005 0005 7088 7123 7157 .7190 7224 - 3.3 .0006 0005 0006 0008 .0006 0005 .0005 6915 6950 6985 7019 7054 7549 -32 0007 0007 0006 0.5 0007 7357 7389 7422 .7454 7486 7517 0008 000 0010 0009 0009 0009 0008 0008 0008 0.6 7257 7291 7324 7734 7764 7794 7823 7852 -3.1 .0013 0013 0013 0012 0012 .0011 .0011 9011 .0010 0010 7580 7611 7642 7673 7704 8133 -3.0 0.7 8023 8051 8078 8106 0019 0018 0018 0017 0016 0016 ,0015 0015 .0014 .0014 7967 7995 -29 0019 0.8 7881 7910 .7939 8389 .0021 0020 ,8238 8264 8289 8315 8340 8365 8212 -2.8 0026 .0025 0024 0023 .0023 .0022 -0021 0.9 8159 8186 8531 8554 8577 8599 8621 0035 .0034 .0033 0032 0031 .0030 -0029 .0028 .0027 .0026 8413 8438 8461 8485 8508 8810 8830 -2.7 1.0 8790 0044 0043 0041 -0040 .0039 0038 .0037 .0036 8729 0047 0045 8643 8665 8686 8708 8749 8770 -2.6 8997 9015 .0057 .0055 .0054 .0052 .0051 .0049 .0048 1.1 8944 8962 8980 0060 .0059 1.2 8849 8869 8888 8907 8925 0062 9131 9147 9162 9177 -25 .0068 .0068 .0064 a. Who's 9080 .0078 .0075 .0073 .0071 .0069 1.3 9032 9049 9066 9082 9099 9115 -2.4 0082 9251 9265 9279 9292 9306 9319 .0087 .0084 9236 -2.3 0107 0104 .0102 0099 0096 .D094 .0091 .0089 1.A 9192 9207 9222 9441 0125 .0122 .0119 .0116 0113 0110 9332 9345 9357 9370 .9382 9394 9406 9418 9429 - 2.2 .0139 0136 0132 .0129 .0143 1.5 0146 9505 9515 9525 .9535 9545 .0174 .0166 0162 .0158 0154 0150 -21 0179 .0170 1.6 9452 9463 .9474 9484 9495 9633 + SAVE 0207 0202 .0197 0192 .0168 0183 9554 9564 9573 9582 9591 9599 9608 9616 9625 -2.0 0228 0222 0217 0212 1.7 9693 9699 97ck 0268 0262 .0256 0250 0244 0239 .0233 1.8 9641 9649 9656 9664 9671 9678 9686 0287 0281 0274 9744 9750 9756 9761 976 -19 0344 0336 0329 0322 0314 0307 0301 0294 1.9 9713 9719 9726 9732 9738 -18 0359 0351 0427 0409 040 0392 0384 0375 0367 -17 0446 0436 0418 A W tv S O 10
