fllustration 12.14. Trend equation for yearly sales (in 1000 Rs) for a commodity with year 1971 as origin is Y=- 81.6+28.8X. Deter mine the trend equation to give the monthly trend values with Jan 1972 as origin and calculate the trend for March 1972. !!

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A: Given,n=12p=0.7q=1-pq=1-0.7=0.3

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Q: n. How large of a sample size is required?

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