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A research scholar wants to know how many times per hour a certain strand of virus...

A research scholar wants to know how many times per hour a certain strand of virus reproduces. The mean is found to be 10.6 reproductions and the population standard deviation is known to be 2.3. If a sample of 360 was used for the study, construct the 85%confidence interval for the true mean number of reproductions per hour for the virus. Round your answers to one decimal place.

Math   Statistics-And-Probability   
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Answer #1

We have given that,              
              
Sample mean =10.6      
Population standard deviation=2.3  
Sample size=360      
Level of significance =1-0.85=0.15      
Z critical value (by using Z table)=1.44      

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