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Get Full Access to Statistics: Informed Decisions Using Data - 5 Edition - Chapter 7.2 - Problem 15
Get Full Access to Statistics: Informed Decisions Using Data - 5 Edition - Chapter 7.2 - Problem 15

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# ?In Problems 13–18, find the indicated z-score. Be sure to draw a standard normal curve that depicts the solution. Find the z-score such that the

ISBN: 9780134133539 240

## Solution for problem 15 Chapter 7.2

Statistics: Informed Decisions Using Data | 5th Edition

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Problem 15

In Problems 13–18, find the indicated z-score. Be sure to draw a standard normal curve that depicts the solution.

Find the z-score such that the area under the standard normal curve to its right is 0.25.

Step-by-Step Solution:

Step 1 of 5) Find the z-score such that the area under the standard normal curve to its right is 0.25. This model gives the expected (or mean) value of HDL cholesterol for a specific BMI and total cholesterol for BMIs between 16 and 40 and total cholesterol levels between 130 mg>dL and 300 mg>dL. From this model we interpret the coefficients as follows: For a 1-unit increase in body mass index, high-density cholesterol is expected to decrease by 2 mg>dL. For a 1-unit increase in total cholesterol, high-density cholesterol is expected to increase 0.1 mg>dL. The following represent the expected HDL cholesterol of an individual with three different levels of BMI: x1 = 20: yn = 65 - 21202 + 0.1x2 = 25 + 0.1x2 x1 = 25: yn = 65 - 21252 + 0.1x2 = 15 + 0.1x2 x1 = 30: yn = 65 - 21302 + 0.1x2 = 5 + 0.1x2 Notice that each of these lines has the same slope, 0.1, but a different intercept.

Step 2 of 2

##### ISBN: 9780134133539

The answer to “?In 13–18, find the indicated z-score. Be sure to draw a standard normal curve that depicts the solution.Find the z-score such that the area under the standard normal curve to its right is 0.25.” is broken down into a number of easy to follow steps, and 34 words. The full step-by-step solution to problem: 15 from chapter: 7.2 was answered by , our top Statistics solution expert on 01/15/18, 03:19PM. Statistics: Informed Decisions Using Data was written by and is associated to the ISBN: 9780134133539. This textbook survival guide was created for the textbook: Statistics: Informed Decisions Using Data, edition: 5. Since the solution to 15 from 7.2 chapter was answered, more than 225 students have viewed the full step-by-step answer. This full solution covers the following key subjects: . This expansive textbook survival guide covers 88 chapters, and 2422 solutions.

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