Answer
$P(x < 8)$ $= 0.0702$
Interpretation: The probability that fewer than 8 smokers started smoking before the age of 21 is 0.0702. If we carry out 100 trials of this experiment, we expect that approximately 7 trials will result in fewer than 8 smokers who started smoking before age 21.
Work Step by Step
$P(x < 8)$
$= P(0) + P(1) + P(2) + P(3) + P(4) + P(5) + P(6) + P(7)$
$= P(x \leq 7)$
$= 0.0702$ (Can be read directly from table IV)
