7 – 9 algebraic substitution Let a = -1,x = -2,y = 5 find the value for the following expressions 6+ 6a³ 7. ух — 2 9. —2у — Зх -4ax + x 8. a – x² + y -10

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.