In a hypothesis test, if a sample has a z-score near zero, __________. A)this is strong evidence for a statistically significant treatment effect 
 B)this sample’s z-score is probably in the critical region 
 C)none of the other options are correct D)it means that you should probably reject the null hypothesis

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.