Note: Use a computer application (SPSS) to solve for the following problems. 2. A study was conducted to investigate the effects of exercise on stress. The table below lists systolic blood pressure readings(in mmHg) of subjects from the time preceding 25 minutes of aerobic bicycle exercise and preceding the introduction ofstress through arithmetic and speech tests (based on data from "Sympathoadrenergic Mechanisms in ReducedHemodynamic Stress Response after Exercise"). Use a 1% level of significance to test the claim that the different groups ofsubjects have the same mean blood pressure.Female/BlackMale/BlackFemale/WhiteMale/White117.33115.67119.67125.00130.6720.67106.33111.3393.67120.33107.00128.6795.00133.00108.3399.67102.33124.67117.00103.0092.00118.00113.33127.33

Null Hypothesis: The different groups of subjects have the same mean blood pressure. Alternative…

Answered: 2. A study was conducted to investigate…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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If the width of a certain rectangle has its width increased by 25 and its length decreased by 15, the area is seen to increase by 225 square units. But, if the width is reduced by 15 and the length is increased by 15, the area decreases by 375 square units. Find the original dimensions of the rectangle. W (width) = L (Length)=
A company sells rectangular vases, with dimensions of 2 inches by 3 inches by 4 inches. There are two options for boxes that they can use to ship. Box One is a 4-inch cube and costs $1.00 per box, but requires foam padding at $0.05 per cubic inch. Box Two costs $3.25 and does not require any foam padding. Which box is the most cost effective for the company?
Consider the following passage: I ran a regression, with many variables to predict the result of another variable which was the murder rate. One can see that lots of things, can cause the murder rate to increase or decrease. I tried to account for all the important factors, and those factors are the SAT scores, unemployment rate, and international migration per 1,000. The SAT score is, average combined total score participants did on the SAT exam. The unemployment rate is, "a measure of the prevalence of unemployment and it is calculated as a percentage by dividing the number of unemployed individuals by all individuals currently in the labor force." (Wikipedia) International migration per 1,000 is, the number of people who come into a state from other countries per 1,000 people who live in the state. After I run the regression I will look at the t scores and p values and I should hopefully conclude that international migration does not cause crime. Which writing mistakes, if any, did…
A rancher has 260 meters of fence with which to enclose three sides of a rectangular meadow (the fourth side is a cliff wall and will not require fencing). Find the dimensions of the meadow with the largest possible area. (For the purpose of this problem, the width will be the smaller dimension (needing two sides); the length with be the longer dimension (needing one side).) length = meters width= meters What is the largest area possible for this meadow? area = meters-squared Enter your answers as numbers. If necessary, round to the nearest hundredths.
A man was at one corner of a 1656 square yard rectangular field. He then ran to the furthest corner, as shown in the diagram. If the length L of the field is 3 yards longer than three times the width W, then how far did the man run? Find both the exact solution and an approximate solution.
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Consider the following problem: A farmer has 3600 ft of fencing and wants to fence off a rectangular field that borders a straight river. He does not need a fence along the river (see the figure). What are the dimensions of the field of largest area that he can fence? (Let x be the width of the field in feet and l be the length of the field in feet.) (a) Experiment with the problem by drawing several diagrams illustrating the situation. Calculate the area of each configuration, and use your results to estimate the dimensions of the largest possible field. (Round your answers to the nearest hundred feet.) (b) Find a function that models the area of the field in terms of one of its sides (c) Use your model to solve the problem, and compare with your answer to part (a)

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