If there are 150 total instruments in said Orchestra, we'll need to divide that number in half.
75, simple enough. Now we know that half of 150 is 75.
Start by writing your problem like this: 150= 75w+37.5b
That equation is all I can think of, because 37.5 is half of 75, which means that's roughly the number you're looking for. Sorry if this doesn't help much<span />
3% x 10 years is 30%. 47 - 30% is 14.1 or 14
Complete Question
A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie. Among the 500 respondents, 12 % chose chocolate pie, and the margin of error was given as plus or minus 5 percentage points.What values do 
, n, E, and p represent? If the confidence level is 90%, what is the value of 
?
Answer:
a
is the sample proportion 
is the sample size is 
is the margin of error is 
represents the proportion of those that did not chose chocolate pie i.e 
b
Step-by-step explanation:
Here
is the sample proportion
is the sample size is
represents the proportion of those that did not chose chocolate pie i.e
is the margin of error is
Generally is the level of significance and it value is mathematically evaluated as
Where 
is the confidence level which is given in this question as 
So
<span>Among those who disliked the movie, the
majority were in the 26-35 age group. </span>
<span>
To
explain this answer, the data showed the coherent rate of like and dislike,
hence the data showed among the population ages, 26-53 years old disliked the
movie as chosen as the above answer. Keeping the keenness to specificities in
statistics is an important aspect in interpreting and discussing the results of
a specific descriptive data. In which this case, explains and clearly showed
the data on first what is the rating and second who in the group was involved
in this certain event or phenomenon.</span>
15% of 425
(15/100) * 425
(3/20) * 425
(3/4) * 85
255 / 4
63.75
