The purpose of the next activity is to give you practice at deciding whether the normal approximation is appropriate for a given binomial random variable. You'll get to practice checking the rule of thumb (np > 10 and nq > 10), but also get a visual sense of when the normal approximation is appropriate Below is a histogram representing the probability distribution of a binomial random variable (below the histogram you can see which binomial distribution it is.) Decide whether the normal approximation is appropriate by checking the rule of thumb. 0.20 Probability 0.10 60 70 80 X binomial with n= 100, p=0.75 Note that a probability exists for all values 0 to 100, however the probabilities for 0 to 59 and 90 to 100 are so small (almost zero) that they are not visible on the histogram. Visually, the histogram appears to be normal. Now check to see if np 2 10 and nq > 10. np and nq =