Answer:
the first one
Step-by-step explanation:
are those the options? something is wrong here and I'm not sure what. I'm sorry if this is wrong, I tried my best
Answer:
-2,928
Step-by-step explanation:
12 ( 32 - [ 23 • 12 ] )
order of operations PEMDAS ( parenthesis, exponents, multiplication/division, addition/subtraction )
23 • 12 = 276
12 ( 32 - 276 )
12 ( -244 )
-2,928
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.
Answer:
addie at 4.5 candie bars and frankie had 4