Essay
A sample of 81 account balances of a credit company showed an average balance of $1,200. The population standard deviation is $126. You want to determine if the mean of all account balances is significantly different from $1,150. Use a .05 level of significance.
Correct Answer:
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H0: ? = 1150
Ha: ? ? 1150 z = 3....View Answer
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Correct Answer:
Verified
Ha: ? ? 1150 z = 3....
View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
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