Ning lask NO 2: Write your answer on a separate shoot of paper The average price of 350 cellphones is Pts 13.500 with a sample standard
Pts 750
a. Find the 99% confidence interval of the true average pric
cellphones. Interpret your answer in the context of this problem
b. Find the length of the confidence interval.
Write all the given data based on the problem statement and
mplete solution.
formula to be used: a.
b.
solution:
z =
na Task Ne 3:
ele The table below by sup
th​