(Steps Shown) Suppose that a gas utility company wants to estimate it mean waiting time for installation of service to within ± 5 days with 95% confidence. From
Question: Suppose that a gas utility company wants to estimate it mean waiting time for installation of service to within ± 5 days with 95% confidence. From past studies, the standard deviation is estimated as 20 days. What sample size is needed? (0.70 point)
Deliverable: Word Document 
![[All Steps] The athletic boosters club for](/images/solutions/MC-solution-library-40745.jpg "[All Steps] The athletic boosters club for Beaconville has planned")
[All Steps] The athletic boosters club for Beaconville has planned
![[Solution Library] Harry and Melissa Jacobson produce](/images/solutions/MC-solution-library-40746.jpg "[Solution Library] Harry and Melissa Jacobson produce handcrafted")
[Solution Library] Harry and Melissa Jacobson produce handcrafted
(Solution Library) The skimmer Boat Company manufactures three kinds
![[Step-by-Step] The following data give the number](/images/solutions/MC-solution-library-40748.jpg "[Step-by-Step] The following data give the number of orders received")
[Step-by-Step] The following data give the number of orders received
Solution: The following are ages of nine employees of an insurance
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