The shape ofthe distributon ofthe hte roqand to get an od change at a 15-mini04

Question

The shape ofthe distributon ofthe hte roqand to get an od change at a 15-mini04 hange tacity is unknown Howevet secards racale t at the meantime s 16 7 mmutes, and he stanaddevuln1547"ntel a) to compute probabilities regarding the sample mean using the normal model, what size sample would be requinw O A. The normal model cannolt be used t the shape of the distribution is uninown O B. The sample size needs to be greater than or equal to 30 O C. Any sample size could be uced O D. The sample size needs to be less than or equal to 30 Click to select your answer and then click Check Ane Type here to search app Lock

Explanation / Answer

Answer : Option (B)

To compute the probabilities regarding the sample mean using the normal model the sample size needs to be greater than or equal to 30

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