Determine if the finite correction factor should be used. If so, use it in your

Question

Determine if the finite correction factor should be used. If so, use it in your calculator when you find the probability In a sample of 800 gas stations, the mean price for regular gasoline at the pumps was $2.834 per gallon and standard deviation was 0.009 per galon. A random sample of size 45 is drawn from this population. What is the propability that the mean price per gallon is less than $ 2.832 Determine if the finite correction factor should be used. If so, use it in your calculator when you find the probability In a sample of 800 gas stations, the mean price for regular gasoline at the pumps was $2.834 per gallon and standard deviation was 0.009 per galon. A random sample of size 45 is drawn from this population. What is the propability that the mean price per gallon is less than $ 2.832 In a sample of 800 gas stations, the mean price for regular gasoline at the pumps was $2.834 per gallon and standard deviation was 0.009 per galon. A random sample of size 45 is drawn from this population. What is the propability that the mean price per gallon is less than $ 2.832

Explanation / Answer

Mean ( u ) =2.834
Standard Deviation ( sd )=0.009
Number ( n ) = 45
Normal Distribution = Z= X- u / (sd/Sqrt(n) ~ N(0,1)                  
P(X < 2.832) = (2.832-2.834)/0.009/ Sqrt ( 45 )
= -0.002/0.0013= -1.4907
= P ( Z <-1.4907) From Standard NOrmal Table
= 0.062                  

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