Answer:
A
Step-by-step explanation:
JUst answered same question
0.40 as a decimal. 40% as a percent. :)
(a-b)2=a2-2ab+b2 (b-c)3=b3-2bc+b2
............
they are the same
Total number of Pizzas sampled = 344+391+155+185 = 1075
No. of Thick crust Pizzas in sample = 391
Proportion of Thick crust Pizzas in sample = 391/1075
Expected number of Thick crust in next 3500 pizzas = 3500*(391/1075)
Expected number of Thick crust in next 3500 pizzas = 1273
Out of 3500, he may expect 1273 pizzas to be thick crust
