ONS Add or subtract and, if possible, simplify. add g the equiva- 3b 1. a+b гe we can a+b ommon 14 XE gmi2 x2- 5 2. 3x2-5x-2 Зх — 6 ns, tor the a1 3. a-1 a- 1 Va a +1 70 9x + 2 4. bhe + 3x + x 2x & 4 11. 3r2 2 У 5. y2-y 20 y+ 4 Зу 2y 1). 6. y2-7y+ 10 y2-8y15 M&TAYS 17. 6/20 18 ( SSC bois M 18.

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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.