Experiment a is repeated 20 times. Write an integral that estimates the probability that there are between 30 and 40 mutants, and shade the corresponding area on a sketch of the approximate normal p.d.f. Take a guess at the probability based on your sketch.
Recall the data describing the probabilities of the outcomes of four experiments counting the number of mutants in a bacterial culture.

Suppose that each experiment is repeated (independently) and the total number of mutants is counted.

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Probability Number Experiment Experiment Experiment Experiment of Mutants 0.1 0.2 0.3 0.3 0.1 0.6 0.3 0.1 0.0 0.0 0.3 0.2 0.2 0.2 0.1 0.1 0.3 0.1 0.4 0.1