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In 105 116, find the value of each expression if x = 2 and

Precalculus Enhanced with Graphing Utilities | 6th Edition | ISBN: 9780132854351 | Authors: Michael Sullivan ISBN: 9780132854351 232

Solution for problem 105 Chapter A.1

Precalculus Enhanced with Graphing Utilities | 6th Edition

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Precalculus Enhanced with Graphing Utilities | 6th Edition | ISBN: 9780132854351 | Authors: Michael Sullivan

Precalculus Enhanced with Graphing Utilities | 6th Edition

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Problem 105

In 105 116, find the value of each expression if x = 2 and y = -1

Step-by-Step Solution:
Step 1 of 3

Lab #1 The Penny Problem: Review The Scientific Method Scientists use the scientific method to answer questions and provide explanations about natural phenomena. It is a logical process based on careful observation and experimentation. 1. Observation: leads to a question and discussion about the observed phenomena. 2. Hypothesis: based on the observation scientists generate a hypothesis or tentative explanation for the observed phenomena. Hypothesis are written as two statements; one called the null hypothesis, and the other called alternate hypotheses. - The Null Hypothesis – is written in a way that shows no difference between the groups under study. Ex: There is statistically significant relationship between the color of pennies and their weight. - The Alternate Hypothesis – is written in a way that shows how a “successful” difference will be found. Ex: There is a statistically significant relationship between the color of the pennies and their weight. - A good hypothesis is testable and offers only one explanation. In addition, predictions are used for the creation of carefully designed experiments. 3. Experiments – should only test one factor (variable) at a time with all other conditions being kept constant. 4 Results – Data collected from the experiments are analyzed using statistics, are evaluated in respect to the original hypothesis statement. It is important to note that there are two types of data: Continuous: All possible and available numeric outcomes. Measurements of weights, with accurate electronic balances it is possible to measure 1.0, 1.01, and 1.001 grams. Group sample means (averages) are then determined. Scalar: “either / or”, “heads or tails”, “male or female”, etc. - Group sample medians are then determined. From the statistical analysis, conclusions are drawn. 5. Conclusion – If the experiments has been designed properly, the data should support or reject the hypotheses. Note: If you can neither support nor reject the hypothesis statement, then the experiment has been poorly designed. If the experiments analysis leads to a rejection of the alternate hypothesis (null hypothesis accepted), then a new or revised hypothesis statement is constructed and the process starts over. If the hypothesis is supported (alternate hypothesis accepted), further experimentation is still warranted because repetition will always strengthen the evidence for acceptance of the alternate hypothesis. 6. A Frequency Histogram - Plots mass in tenths (or one one­hundredth) of a gram on the “X” (horizontal) axis (this is the independent variable) - “Y” axis is used to record each individual outcome having a particular mass value (this is the dependent variable) Samples – groups taken out of a population What is the difference between a sample and a population - Sample: specific group - Population: includes all groups

Step 2 of 3

Chapter A.1, Problem 105 is Solved
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Textbook: Precalculus Enhanced with Graphing Utilities
Edition: 6
Author: Michael Sullivan
ISBN: 9780132854351

Precalculus Enhanced with Graphing Utilities was written by and is associated to the ISBN: 9780132854351. Since the solution to 105 from A.1 chapter was answered, more than 241 students have viewed the full step-by-step answer. This full solution covers the following key subjects: . This expansive textbook survival guide covers 114 chapters, and 8075 solutions. The answer to “In 105 116, find the value of each expression if x = 2 and y = -1” is broken down into a number of easy to follow steps, and 17 words. The full step-by-step solution to problem: 105 from chapter: A.1 was answered by , our top Math solution expert on 01/11/18, 01:38PM. This textbook survival guide was created for the textbook: Precalculus Enhanced with Graphing Utilities, edition: 6.

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In 105 116, find the value of each expression if x = 2 and