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Author Question: Solve the problem. Round the standard score to the nearest tenth before using the z-score tables. ... (Read 20 times)

geoffrey

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Question 1

Solve the problem. Round the standard score to the nearest tenth before using the z-score tables. Express your answer as a decimal rounded to four decimal places.

The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 84 inches, and a standard deviation of 10 inches. What is the likelihood that the mean annual precipitation during 25 randomly picked years will be less than 86.8 inches?
◦ 0.0808
◦ 0.9192
◦ 0.5808
◦ 0.4192

Question 2

Solve the problem. Round the standard score to the nearest tenth before using the z-score tables. Express your answer as a decimal rounded to four decimal places.

The weights of the fish in a certain lake are normally distributed with a mean of 15 lb and a standard deviation of 6. If 4 fish are randomly selected, what is the likelihood that the mean weight will be between 12.6 and 18.6 lb?
◦ 0.3270
◦ 0.0968
◦ 0.6730
◦ 0.4032


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Marked as best answer by geoffrey on Jan 18, 2020

jojobee318

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geoffrey

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Reply 2 on: Jan 18, 2020
Excellent


Viet Thy

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Reply 3 on: Yesterday
Gracias!

 

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