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QUESTION 5 {15 MARKS} A marketing study was done on oonsmner from two age groups for their spending on 20 categories ofconsumer items. Based on 15 respondents in the 18 34 age group, the average spending is RMTEJAO with avariance ofRMESJ. Meanwhile, based on 13 respondents in the 35+ group, the mean and variance were RM\" 10 and RM22.20 respectively. By assuming the population variance are not equal, test if there is any difference in the mean Spending between these two populations in 95% signicance level. ouasnorv a {15 MARKS} Table 3 shows the information regrding the thermal performance of two (2) batches of computer procemor under stress test. rfbrmance oftwo batches of Table 3: Thermal . Batch 1 Batch 2 No. of observations Mean 916C 935C Standard deviation 315C 25C Using 95% signicance level, test whether the standard variation of processors from batch ] is greater than the standard deviation of batch 2