Answer:
$52
Step-by-step explanation:
3 books → $13
1 book → $13/3
12 books → $13/3 x 12 = $52
B,C, and D
Give thanks and brainliest!! :P
Z = (x-µ)/(s/√n)=(98.5-98.2)/(0.62/√19) = 2.11
left tail p-value = 0.9826
so 98.26% are lower.