The length of life (in hours) of a sample of 40 100-watt light bulbs manufacture
ID: 3393690 • Letter: T
Question
The length of life (in hours) of a sample of 40 100-watt light bulbs manufactured in a Sylvania plant and a sample of 40 100-watt light bulbs manufactured in a Phillips plant are contained in tab Bulb Life in the Excel file. In order to analyze the difference in bulb life from these two manufacturers, determine whether the variances are equal and then run the appropriate t-test to test the hypothesis that the mean bulb life of Sylvania bulbs is different than the mean bulb life of Phillips bulbs at the .05 level of significance. State your conclusion and the basis for your conclusion.
Sylvania Phillips Sylvania Phillips 684 819 868 962 831 907 905 1005 859 952 926 1020 893 994 946 1077 922 1016 984 1113 939 1038 1052 1174 972 1096 773 897 1016 1153 852 942 697 836 870 986 835 912 909 1007 860 959 926 1022 899 1004 954 1077 924 1018 1005 1113 943 1072 1080 1188 977 1100 821 903 1041 1154 852 943 720 888 876 992 848 918 911 1015 938 1034 971 1082 1014 1116 1093 1230Explanation / Answer
The length of life (in hours) of a sample of 40 100-watt light bulbs manufacture
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.