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Author Question: Solve the problem.Which of the following statements concerning areas under the standard normal ... (Read 53 times)

charchew

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Question 1

Find the requested percentile.

The weights of certain machine components are normally distributed with a mean of 8.62 grams and a standard deviation of 0.09 grams. Find the 97th percentile. Round your answer to  one decimal place.
◦ 8.7 grams
◦ 8.9 grams
◦ 8.8 grams
◦ 8.6 grams

Question 2

Solve the problem.

Which of the following statements  concerning areas under the standard normal distribution curve is/are true (if any)?
a. The area to the left of  -3 in a standard normal distribution curve is zero.
b. The area under a standard normal distribution curve between any two z-scores is greater than zero.
c. The area under the standard normal normal distribution curve between two z-scores will be negative if              
     both z-scores are negative.
d. The area under the standard normal distribution curve to the left of any z-score is less than 1.
◦ b, d
◦ a, b
◦ a
◦ a, c


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Marked as best answer by charchew on Jan 18, 2020

kaykay69

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charchew

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Reply 2 on: Jan 18, 2020
Excellent


6ana001

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Reply 3 on: Yesterday
Wow, this really help

 

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