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Author Question: Using the standard normal curve, find the area to the left of z = ... (Read 94 times)

vicotolentino

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on: Jun 24, 2018
Using the standard normal curve, find the area to the left of z = -2.26.

Question 2

A trucking firm has trucks that average a payload of 22.5 tons and a standard deviation of 1.5 tons. An accounting firm is auditing the shipping orders for the past year for billing errors. It chooses a random sample of 64 shipping orders. What is the probability that the sample mean weight will be within 1 ton of the true population mean of 22.5 tons?


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bubulittle310@msn.cn

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Reply #1 on: Jun 24, 2018
Answer to Question 1

0.0119

Answer to Question 2

1


vicotolentino

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Reply 2 on: Jun 24, 2018
YES! Correct, THANKS for helping me on my review

AngeliqueG

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Reply 3 on: Yesterday
:D TYSM

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