The number of days Americans take each year for the vacation is normally distributed with the mean of 15.8 days and standard deviation of 2.2 days.
X P(Xx) Mean Std dev
11 .0146 .9854 15.8 2.2
15 .3581 .6419 15.8 2.2
21 .9910 .0090 15.8 2.2
24 .9999 .0001 15.8 2.2
p(lower) p(upper)
(A) Examine the output above to estimate what percentage of Americans take vacations between 15 and 24 days.
(B) What percentage of Americans will take more than 11 days? If 1000 Americans were polled regarding the amount of vacation they take each year, how many would you expect to more than 11 days?