[Solution] Construct a 90% confidence interval (z a /2 = 1.65) for the mean age of a person’s primary vehicle, if a sample of 30 adults had a mean of 5.6
Question: Construct a 90% confidence interval (z a /2 = 1.65) for the mean age of a person’s primary vehicle, if a sample of 30 adults had a mean of 5.6 years and a sample standard deviation of 0.8 years.
Deliverable: Word Document 
(Step-by-Step) In a recent survey of 150 households, 54 had central
![[See Solution] You wish to estimate, with](/images/solutions/MC-solution-library-51388.jpg "[See Solution] You wish to estimate, with 95% (z a/ 2 = 1.96)")
[See Solution] You wish to estimate, with 95% (z a/ 2 = 1.96)
(Step-by-Step) You wish to estimate 95% (z a/ 2 = 1.96) confidence, the
![[Steps Shown] Assume that the variable X](/images/solutions/MC-solution-library-51390.jpg "[Steps Shown] Assume that the variable X is normally distributed")
[Steps Shown] Assume that the variable X is normally distributed
(Solved) In a particular city the average salary of secretaries
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