Calculate the correlation coefficient between the age and net ...

[nmorano1]

Calculate the correlation coefficient between the age and net worth of individuals.
 
  What will be an ideal response?

Question 2

Without doing any calculations, explain whether a 90 confidence interval for the population mean would be wider than, narrower than, or the same as that of a 95 confidence interval for the population mean.
 
  What will be an ideal response?

[kthug]

Answer to Question 1

r = 0.207

Answer to Question 2

A 90 confidence interval for the population mean would be narrower than that of a 95 confidence interval for the population mean since the t-score for a 90 confidence interval with v = 9 (1.833 ) is smaller than the t-score for the 95 confidence interval in the previous question (2.262 ).

[nmorano1]

Thanks for the timely response, appreciate it

[xiazhe]

Wow, this really help