Question 1203211
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A sample of 40 sales receipts from a grocery store has x= 137 and s=30. Use these values 
to test whether or not the mean is sales at the grocery store are different from 150.
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As presented in the post, the problem is posed/worded INCORRECTLY.


To be correct, the problem must include the "confidence interval" value,

which is missed in the post.