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(All in Excel) See the population data for Buena School District buses such as: c) Construct...

(All in Excel) See the population data for Buena School District buses such as:
c) Construct the confidence interval of 90% of the average mileage of the buses.

Miles

853
883
822
865
751
870
780
857
818
869
848
845
885
838
760
741
859
826
806
858
785
828
980
857
803
819
821
798
815
757
1008
831
849
839
812
809
864
859
815
799
844
832
842
792
775
882
874
837
774
823
790
800
827
830
895
804
866
842
851
835
866
846
802
847
856
799
827
817
842
815
784
817
816
816
827
806
819
836
757
817

math   Statistics-And-Probability   
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Answer #1

we have Exie sum of all observation 66409 BUIX? Sum of Square of all observation 55267545 n=80 *- $ 66: Eæ 66409 - 830.1125 8.: 90.7. confidence interval of the average mileage of buses, XI 2012 * t $30:1105 1:64 * 41:9237 V80 → 18 880.1125 I 7.6870here the data is population. So wee use the population standard deviation.

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