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Standard Normal Distribution. In Exercises, | Ch 6.2 - 29BSC

Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola ISBN: 9780321836960 18

Solution for problem 29BSC Chapter 6.2

Elementary Statistics | 12th Edition

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Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola

Elementary Statistics | 12th Edition

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Problem 29BSC

Standard Normal Distribution. In Exercises 17–36, assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. In each case, draw a graph and find the probability of the given scores. If using technology instead of Table A-2, round answers to four decimal places.

Between − 2.20 and 2.50

Step-by-Step Solution:

Answer :

Step 1 :

In finding the area under standard normal curve, you can use the statistical tables at the back of your textbook, or use your calculator.

In using the tables, remember that areas are reported as P(Z < a)

Therefore, you need to use the following relationships

P(Z > a) = 1 - P(Z < a)

P(a < Z < b) = P(Z < b) - P(Z < a)

Applying this principles, we get

P(-2.20 < Z < 2.50) = P(Z < 2.50) - P(Z < -2.20)

Area under normal curve can be calculated by using standard normal table or statistical table that is

P(z < 2.50) = 0.9799 (i.e, row 2.5 under column 0.00)

   P(z < -2.20) = 0.0139(i.e, row -2.2 under column 0.00)

then

                                  = 0.9938 - 0.0139

                                   = 0.9799

Step 2 of 1

Chapter 6.2, Problem 29BSC is Solved
Textbook: Elementary Statistics
Edition: 12
Author: Mario F. Triola
ISBN: 9780321836960

This full solution covers the following key subjects: given, test, standard, scores, instead. This expansive textbook survival guide covers 121 chapters, and 3629 solutions. This textbook survival guide was created for the textbook: Elementary Statistics, edition: 12. The full step-by-step solution to problem: 29BSC from chapter: 6.2 was answered by , our top Statistics solution expert on 03/15/17, 10:30PM. Since the solution to 29BSC from 6.2 chapter was answered, more than 683 students have viewed the full step-by-step answer. Elementary Statistics was written by and is associated to the ISBN: 9780321836960. The answer to “?Standard Normal Distribution. In Exercises 17–36, assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. In each case, draw a graph and find the probability of the given scores. If using technology instead of Table A-2, round answers to four decimal places.Between ? 2.20 and 2.50” is broken down into a number of easy to follow steps, and 66 words.

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Standard Normal Distribution. In Exercises, | Ch 6.2 - 29BSC