Question 1178852
<pre><font face = "consolas" color = "indigo" size = 3><b>
Hi
a)  Normal distribution:  µ = 22 and σ = 6
b) .4338
c) .2478
d) 78% of all Americans receive at most how many Christmas cards? invNOrm(.78) = .7722
{{{z =blue (x - mu)/blue(sigma)}}} OR {{{z*(blue(sigma)) + mu=blue (x)}}}
.7722(6) + 22 =x = 26.6332 0r receive at most 26 Christmas cards 
Wish You the Best in your Studies.
</font></b></pre>