I want explanation

Weekly Response 6Below is a table of a portion of statistical output from an analysis of a random sample of births in
three states. Please see the table below and answer the following questions.
BIRTH WEIGHT
(Grams)
STATISTIC
3330.99
Mean
95%
Confidence
for Mean
Standard
Deviation
(Lower Bound)
3327.65
(Upper Bound)
3334.33
555.899
STD. ERROR
1.705
a) Briefly explain what the 95% confidence interval of the birth weight means. What does it
tell us about births in the three states sampled?
b) What would the 90% confidence interval look like relative to the 95% confidence interval
and why? (Hint: Would the 90% confidence interval lower and upper bound be closer or
further apart than the 95% confidence interval lower and upper bound)
c) In one to two sentences, explain what information the standard deviation provides. (Hint:
Think about the shape of the normal curve here)
d) Explain what information the standard error of the mean provides and how it is related to
the confidence interval. (Hint: consider the equation to calculate the confidence interval
for the second part of this question)