When finding single or multiple probabilities using the binomial distribution on the calculator, which function do I use respectively?
· In a binomial probability question that only asks you for one single probability (e.g. P=48), use binompdf· In a binomial probability question that asks you for multiple probabilities (e.g. P≥48), use binomcdf· In a binomial probability question that asks you for example (P≥48), do 1 – (P<48)· To show your working out on P2, write (n = trials, p = probability)
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In an arithmetic sequence, the first term is 2, and the fourth term is 14. a) Find the common difference, d. b) Calculate the sum of the first 14 terms, S14.
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Find a and b (both real) when (a+b*i)^2=i.