StatisticsdrillBinomial: at least k
A statistics problem from Statisticsdrill. Solve it with one answer box, with a fresh sample on every attempt and the worked steps and spreadsheet function in the answer, and it is checked the moment you submit.
The task
A marketing email gets a click from 15% of recipients. It goes to 10 recipients who act independently. What is the probability that at least 5 of them click? Round to 4 decimal places.
What this problem teaches
At least k = 1 - P(X ≤ k - 1). Note the k - 1: the value k itself is included in at least k.
A hint if you get stuck
At least k = 1 - P(X ≤ k - 1). Note the k - 1: the value k itself is included in at least k.
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