The z-score for 14.5 ounces is -2.50; the z-score for 16.5 ounces is 2.50. Using the answers from Step 1, what percent of the boxes will weigh between 14.5 ounces and 16.5 ounces? (Round your answer to one decimal place.)

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section11.3: Shapes Of Distributions
Problem 20E
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The z-score for 14.5 ounces is -2.50; the z-score for 16.5 ounces is 2.50.
Using the answers from Step 1, what percent of the boxes will weigh between 14.5 ounces and 16.5 ounces? (Round your answer to one decimal place.)

Area Under Standard Normal Distribution
Use the z-score table to answer the following question.
Step 1
The weights of all the boxes of corn flakes filled by a machine are normally distributed, with a mean weight of
15.5 ounces and a standard deviation of 0.4 ounce.
Find the z-scores for boxes which weigh 14.5 ounces and 16.5 ounces. (Round your answers to two decimal
places.)
14.5 ounces: z = -2.50
-2.5
16.5 ounces: z = 2.50
2.5
Step 2
The z-score for 14.5 ounces is -2.50; the z-score for 16.5 ounces is 2.50.
Using the answers from Step 1, what percent of the boxes will weigh between 14.5 ounces and 16.5 ounces?
(Round your answer to one decimal place.)
%
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Transcribed Image Text:Area Under Standard Normal Distribution Use the z-score table to answer the following question. Step 1 The weights of all the boxes of corn flakes filled by a machine are normally distributed, with a mean weight of 15.5 ounces and a standard deviation of 0.4 ounce. Find the z-scores for boxes which weigh 14.5 ounces and 16.5 ounces. (Round your answers to two decimal places.) 14.5 ounces: z = -2.50 -2.5 16.5 ounces: z = 2.50 2.5 Step 2 The z-score for 14.5 ounces is -2.50; the z-score for 16.5 ounces is 2.50. Using the answers from Step 1, what percent of the boxes will weigh between 14.5 ounces and 16.5 ounces? (Round your answer to one decimal place.) % Submit Skip (you cannot come back)
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