[All Steps] A study of 20 worldwide financial institutions showed the correlation between their assets and pretax profit to be .86. At the .05 significance
Question: A study of 20 worldwide financial institutions showed the correlation between their assets and pretax profit to be .86. At the .05 significance level, can we conclude that there is positive correlation in the population?
Deliverable: Word Document 
![[Step-by-Step] The following sample observations were randomly](/images/solutions/MC-solution-library-38375.jpg "[Step-by-Step] The following sample observations were randomly selected.")
[Step-by-Step] The following sample observations were randomly selected.
(Solution Library) A population of unknown shape has a mean of
![[Step-by-Step] A sample of 81 observations is](/images/solutions/MC-solution-library-38377.jpg "[Step-by-Step] A sample of 81 observations is taken from a normal population.")
[Step-by-Step] A sample of 81 observations is taken from a normal population.
![[See Solution] Refer to the previous exercise.](/images/solutions/MC-solution-library-38378.jpg "[See Solution] Refer to the previous exercise. Suppose that 64")
[See Solution] Refer to the previous exercise. Suppose that 64
(See) Develop a 90 percent confidence interval for the population
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