Answer:
You and 9 friends all made a bake sale and profited 100 dollars. How much money should you and each friend get.
ANSWER 100/ 9 friends + you
= 100/10
= $10
Step-by-step explanation:
The answers to the questions
A. The cost of no bags of kettle corn. With no bags, there will be no cost.
Answer:
He must survey 123 adults.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of
, and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the z-score that has a p-value of
.
The margin of error is:

Assume that a recent survey suggests that about 87% of adults have heard of the brand.
This means that 
90% confidence level
So
, z is the value of Z that has a p-value of
, so
.
How many adults must he survey in order to be 90% confident that his estimate is within five percentage points of the true population percentage?
This is n for which M = 0.05. So






Rounding up:
He must survey 123 adults.
(3/5)(2/5)=6/25
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