In 2002, there were 2,058,000 male and 1,964,000 female live births. It makes no sense to calculate a confidence interval for the percent of male births in the United States for that year. Why not

inference is unnecessary for whole population.

Step-by-step explanation:

As per the question it is mentioned that in the year 2002, there were 2,058,000 male and 1,964,000 female also there is no need to determine the confidence interval for a male birth percentage in the united states for the same year as the inference is not necessary for the overall population

And, the same is to be considered

step-by-step explanation:

a.   since the profit made in 2012 is equal to the profit made in 2014, the profit is           symmetric about the line y = 120,000.

step-by-step explanation:

given that megan owns a clothing boutique.

the profits of 2010, 11, are recorded and shown as follows:

years since     2010 0     1     2     3       4       5

profits made in 1000's   39       84     111     120   111     84

we find that profit gradually increases form 2010 to 2013 upto 120,   then starts decreasing.

the profits for 2012 and 2014 are the same while that of 2011 and 2015 are also the same.

this shows that there is symmetry about the line profit = 120000

hence answer is:

a.   since the profit made in 2012 is equal to the profit made in 2014, the profit is           symmetric about the line y = 120,000.

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i think the answer is b