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Get Full Access to Statistics: Informed Decisions Using Data - 5 Edition - Chapter 7.2 - Problem 11
Get Full Access to Statistics: Informed Decisions Using Data - 5 Edition - Chapter 7.2 - Problem 11

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# ?In Problems 5–12, find the indicated areas. For each problem, be sure to draw a standard normal curve and shade the area that is to be found. Det ISBN: 9780134133539 240

## Solution for problem 11 Chapter 7.2

Statistics: Informed Decisions Using Data | 5th Edition

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Problem 11

In Problems 5–12, find the indicated areas. For each problem, be sure to draw a standard normal curve and shade the area that is to be found.

Determine the total area under the standard normal curve

(a) to the left of z = -2.94 or to the right of z = 2.94

(b) to the left of z = -1.68 or to the right of z = 3.05

(c) to the left of z = -0.88 or to the right of z = 1.23

Step-by-Step Solution:

Step 1 of 5) Be sure to draw a standard normal curve and shade the area that is to be found. Determine the total area under the standard normal curve (a) to the left of z = -2.94 or to the right of z = 2.94 (b) to the left of z = -1.68 or to the right of z = 3.05 (c) to the left of z = -0.88 or to the right of z = 1.23. So a small t-test statistic for an explanatory variable means that a variable does not yield much additional explanation. Suppose that x1 and x2 are highly correlated to each other and to the response variable. If we include both explanatory variables in the model, the high correlation may lead to small t-test statistics for x1 and x2. This leads us to believe that neither variable is important. In fact, the model may be “confused.” This confusion results because the model believes that not much additional information is learned by adding x1 to the model when x2 is already in the model. In addition, x2 does not provide much additional information when x1 is already in the model.

Step 2 of 2

##### ISBN: 9780134133539

The full step-by-step solution to problem: 11 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 full solution covers the following key subjects: . This expansive textbook survival guide covers 88 chapters, and 2422 solutions. This textbook survival guide was created for the textbook: Statistics: Informed Decisions Using Data, edition: 5. The answer to “?In 5–12, find the indicated areas. For each problem, be sure to draw a standard normal curve and shade the area that is to be found.Determine the total area under the standard normal curve(a) to the left of z = -2.94 or to the right of z = 2.94(b) to the left of z = -1.68 or to the right of z = 3.05(c) to the left of z = -0.88 or to the right of z = 1.23” is broken down into a number of easy to follow steps, and 79 words. Since the solution to 11 from 7.2 chapter was answered, more than 214 students have viewed the full step-by-step answer.

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