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Author Question: Calculate the correlation coefficient between the age and net worth of individuals. What will be ... (Read 77 times)

nmorano1

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on: Jun 24, 2018
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?


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kthug

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Reply #1 on: Jun 24, 2018
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

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Reply 2 on: Jun 24, 2018
YES! Correct, THANKS for helping me on my review

amandalm

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Reply 3 on: Yesterday
Wow, this really help

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