The z scores corresponding to the mean weight of a rotten apple relative to the apples from either orchard are, respectively,


The mean for the standard normal distribution is 0, which means that z scores closer to 0 represent data points that are more likely to occur. Therefore it's reasonable to believe that rotten apples occur more often in shipments from Zippy's.
Answer:
The sample size required is 2500.
Step-by-step explanation:
z-score:
In function of the margin of error M, the z-score is given by:

In this question, we have that:

So






The sample size required is 2500.
8% of x = $18.80
x = 18.80/8%
x = 18.80/0.08
x = $235
Answer:
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Step-by-step explanation:
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