Assignment:
You select a random sample of n=14 families in your neighborhood and find the following family size (number of people in the family).
6
7
10
9
8
6
7
7
6
7
6
7
8
9
a) What is the mean family size for the sample? I think the answer here is all the above #'s * 14=7.37143
The mean family size for the sample is _7.36
b) What is the standard deviation for the sample?_______( round to the nearest tenth)
c) What is the best estimate for the mean family size for the population of all families in a country?________
d) What is the 95% confidence interval for the estimate? _____< µ < ____
e) Comment on the reliability of the estimate. Choose below
(a) The sample is likely to be representative of all families in a country.
(b) The sample is unlikely to be very representative of all families in a country.
(c) There is not enough data to make a conclusion.
Provide complete and step by step solution for the question and show calculations and use formulas.