Question

In a study of 100 common stocks, it was found that the annual dividend rates were normally distributed, with a mean of 4.0% and a standard deviation of 0.5%

About how many of these stocks paid more than 5%?

Answer 1

\[\frac{X-\mu}{\sigma}\]
\[\frac{5-4}{.5}=2\]

so you have a z score on the standard normal table of 2. You can look up the probability of being higher than that in a cart.

Answer 2

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