If a random sample of 20 persons weighed 3,460, the sample mean x-bar would be 3460/20 = 173 pounds.
The z-score for 173 pounds is given by:

Referring to a standard normal distribution table, and using z = 0.66, we find:

Therefore

The answer is: 0.2546
Answer:
I think that the answer is A
Step-by-step explanation:
I'm guessing 7.71
Step-by-step explanation:
1,079.40/140
Answer
x=-40
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