Answer:
True
Step-by-step explanation:
The margin of error of a confidence interval is given by:
In which z is the critical value related to the confidence level, 
is the standard deviation of the population and n is the size of the sample.
So as n increases, the margin of error decreases, that is, the interval gets narrower.
The students could produce a narrower confidence interval by increasing the sample size to 100.
From the explanation above, the answer is true.
Answer:
325.6909
Step-by-step explanation:
Ok let’s start off easy, the x and y stand for the missing number once you find those missing numbers you chose if the problems both used a same number if so it’s equivalent.if you had to use different numbers to get the answer it would be inconsistent and if you used even numbers to get the even answer than it would be consistent.i hoped that helped!
P = m+n/q
by timesing by p then dividing by q
9×27+2×31-28= n
243+62-28=n
277=n
n=277
