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Question 11 4.00000 out of 4.00000 points The Iowa Department of Transportation repaired hundreds of bridges in 1993. To check the average cost to repair
Question 11 4.00000 out of 4.00000 points The Iowa Department of Transportation repaired hundreds of bridges in 1993. To check the average cost to repair a bridge, a random sample of = 55 bridges was chosen. The mean and standard deviation for the sample are $25,788 and $1,540, respectively. Records from previous years indicate an average bridge repair cost was $25,003. Use the sample data to test that the 1993 mean is greater than $25,003. Usea = 0.05
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