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A statistics instructor is worried about his mortality. He randomly select 31 deceased relatives from his...

A statistics instructor is worried about his mortality. He randomly select 31 deceased relatives from his family tree and determined the age at which they passed away. Here are the results:

67 63 84 65 53 55
61 77 46 75 60 92
69 66 68 52 78 55
61 51 64 76 68 86
73 46 66 48 94 66
48

4 points) What is the point estimate for this population age?(Round answer to two decimal places (4 points) Find the approximate standard error. (Round answer to two decimal places)   4 points) Find  t α 2, the critical value for a 90% confidence level. (Round answer to two decimal places)    (4 points) Find the margin of error for a 90% confidence level.(Round answer to two decimal places)
  (4 points) Find the 90% confidence interval.(Round answer to two decimal places)

Math   Statistics-And-Probability   
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