- Question A Consumer Product Testing Organization Wished To Compare The Annual Power Consumption For Five Different Brand 1 (110.49 KiB) Viewed 39 times
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Question A consumer product-testing organization wished to compare the annual power consumption for five different brands of dehumidifier. Because power consumption depends on the prevailing humidity level, it was decided to monitor each brand at four different levels ranging from moderate to heavy humidity (thus blocking on humidity level). Within each level, brands were randomly assigned to the five selected locations. The resulting observations (annual kWh) appear in Table 1, and the ANOVA calculations are summarized in Table 2. The significance level is 5%. Table 1. Treatments (brands) Blocks (humidity kend) 2 3 1 4 1 2 3 4 685 722 733 811 792 806 802 838 893 880 952 978 875 953 941 1005 1023 920 Table 2. Source of Variation Sum of Squares Mean Square S Treatments (brands) Blocks Error Total 4 3 12 19 53.231.00 116.217.75 1671.00 171.119.75 13 301.75 38.739.25 139.25 fa - 9557 S.- 278.20 a) Write how you enter the above data into MINITAB software? b) Which way do you follow to get the results in Table 2? c) What are the hypotheses you will test? d) What are your decisions and conclusions for your hypotheses? e) Show how you obtain the SST value.