Question #5

Salaries of 49 college graduates who took a statistics course in college have a? mean, x?, of

$60,300. Assuming a standard? deviation, ??, of $19,364?, construct a 99?% confidence interval for estimating the population mean ?.

View a t distribution table.

NEGATIVE z Scores Standard Normal (2) Distribution: Cumulative Area from the LEFT -150 a -34 0003 8003 -11 6004 DO04 -31 BOOT BOOT -1.1 DOOR 0010 0010 -1.0 DO12 0011 DO16 0015 0915 6032 1:0021 6023 -17 -28 1030 -27 0013 6030 -28 0047 0051 -25 -71 -24 0004 5019 50102 -23 0125 0132 0118 0130 0130 0162 0163 -20 -21 0197 0322 6212 0256 -14 -15 1038 -1.1 1012 1451 1210 -10 1335 MAI 743 01 -01POSITIVE z Scores Cumulative Area from the LEFT 5359 101 102 5739 5279 5120 5714 5753 4000 5040 5517 8141 539 5036 6064 6103 5910 6480 6517 5832 5871 04 6355 6293 6179 6217 6700 6772 7224 0.5 7190 6554 6591 J157 7019 7549 8915 6950 07 7257 7324 7357 7852 7642 1673 8106 8133 7580 7967 1.0 $238 8577 8599 4830 LI 8790 8997 1.2 9177 13 3906 14 1.5 som 9236 9429 1.6 9370 4535 IT 9474 9625 9452 9564 9751 9767 1.9 9817 20 9713 21 9772 2:2 9821 8916 9906 23 9952 9920 26 25 9040 9541 9974 27 29 9875 1411310 9587 9991 345 9503 1:50 ad up 350 and up Common fellical MeI Distribution: Critical i Values Left tall 2571 2015 1 415 Critical I value Inegativel 14 2 145 Flight tail 2110 2 101 2:530 L319 1:318 Critical I value ponarvel 1 310 2041 1.306 Two talls 1.306 0/2 Critical I value Critical f value 500 1900 2060