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Category > Statistics Posted 16 May 2017 My Price 6.00

The average life expectancy for Bostonians is 78.1 years

 

The average life expectancy for Bostonians is 78.1 years (The Boston Globe, August 1 6 , 2010). Assume that this average was based on a sample of 50 Bostonians and that the population standard deviation is 4.5 years.

 

a. What is the point estimate of the population mean?

b. At 90% confidence, what is the margin of error?

c. Construct a 90% confidence interval for the population average life expectancy of Bostonians.

 

 

 
 

Answers

Alpha Geek
(8)
Status NEW Posted 16 May 2017 08:05 AM My Price 6.00

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Attachments

file 1494923119-2233123_1_636304331233496829_Confidence-Interval-90-.xlsx preview (155 words )
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