Introductory Statistics
3rd Edition
ISBN: 9780135188927
Author: Gould, Robert, Ryan, Colleen N. (colleen Nooter)
Publisher: Pearson,
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Textbook Question
Chapter 6, Problem 19SE
Standard Normal Use the table or technology to find the answer to each question. Include an appropriately labeled sketch of the Normal curve for each part. Shade the appropriate region. A section of the Normal table is provided.
a. Find the area in a Standard Normal curve to the left of 1.13.
b. Find the area in a Standard Normal curve to the right of 1.13.
Format of the Normal Table: The area given is the area to the left of (less than) the given
z-score.
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Find the z-scores for which 80% of the distribution's area lies between -z and z.
Click to view page 1 of the table. Click to view page 2 of the table.
The Z-scores are
(Use a comma to separate answers as needed. Round to two decimal places as needed.)
C
Questi
Find the indicated area under the standard normal curve.
To the left of z = -0.82
Click here to view page 1 of the standard normal table.
Click here to view page 2
the standard normal table.
The area to the left of z = -0.82 under the standard normal curve is
(Round to four decimal places as needed.)
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A. Directions: Find the area under the normal curve of the following ? values, then sketch the curve. Write your answer inside the box. 1. From the mean to ? = 1.15.
Chapter 6 Solutions
Introductory Statistics
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- Find the mean hourly cost when the cell phone described above is used for 240 minutes.arrow_forwardFind the z-scores for which 97% of the distribution's area lies between -z and z. Click to view page 1 of the table. Click to view page 2. of the table. The z-scores are (Use a comma to separate answers as needed. Round to two decimal places as needed.)arrow_forwardUse the standard normal table to find the specified area. Between z = -0.32 and z = -1.28 Click here to view page 1 of the standard normal table. Click here to view page 2 of the standard normal table,O y The area that lies between z = -0.32 and z = - 1.28 is (Round to four decimal places as needed.)arrow_forward
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- Use the standard normal table find the z-score that corresponds to the cumulative area 0.7224. If the area is not in the table, use the entry closest to the area. If the area is halfway between two entries, use the z-score halfway between the corresponding z-scores. Click to view page 1 of the standard normal table. Click to view page 2 of the standard normal table. z= (Type an integer or decimal rounded to two decimal places as needed.)arrow_forwardFind the z-scores for which 98% of the distribution's area lies between -z and z. Click to view page 1 of the table. Click to view page 2 of the table. OA. (-2.33,2.33) OB. (-1.96,1.96) OC. (-1.645,1.645) OD. (-0.99,0.99)arrow_forwardName: 1. Find the area under the standard normal curve, to the left of z = -0.35. Draw a picture of the standard normal curve, and shade and label all z-values. 2. Find the z-value corresponding to the shaded area under the standard normal distribution. 2 = Area = 0.68arrow_forward
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