Answer:
ehf3rhg4urif4riufnur3ijf3irjurfnhnfhfn3rufni4ugn4rugnt4u :)
Step-by-step explanation:
Answer:
A child ticket is 14 dollars and a adult's ticket is 8 dollars
Step-by-step explanation:
3a+c=38
3a+2c=52
c=14
a=8
Answer:
taxes and at work
Step-by-step explanation:
you deal with money at work and you have to calculate numbers doing taxes.
Answer:
0.97725
Step-by-step explanation:
Given that Professor Heinz has given the same multiple-choice final exam in his Principles of Microeconomics class for many years. After examining his records from the past 10 years, he finds that the scores have a mean of 76 and a standard deviation of 12.
i.e.
Std error of mean = sigma/sqrt n = 2
Thus the sample mean is N(76,2)
Required probability = probability that a class of 36 students will have an average greater than 72 on Professor Heinz's final exam.
=