I’m positive the answer is B if it isn’t I’m sorry
X=.362 or X=29/80................................
Z = (X-Mean)/SD
<span>z1 = (580-600)/20 = - 1 </span>
<span>z2 = (620-600)/20 = + 1 </span>
<span>According to the Empirical Rule 68-95-99.7 </span>
<span>Mean +/- 1*SD covers 68% of the values </span>
<span>Therefore, required percent is 68%
hopes this help :) :D :)</span>
19.99+12.49=32.48
19.99 for the movie and 12.49 for the earphones together they make 32.48
The answer is 3x 2y of the questions
