Find the greatest value of the directionalderivatives of the functionf = x2yz3 at (2, 1, -1) is

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Answered: value of the dir function

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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5. Interpreting dummy variables for multiple categories when the dependent variable is log(y) Consider the following estimated model, where the dependent variable is the log of the hourly wage: log (wage) 0.417 + 0.297 female + 0.053 married + 0.08 educ + 0.029 exper - 0.001 exper² + 0.032 tenure - 0.001 tenure² The coefficient of married implies that the so-called marriage premium is estimated to be about Suppose a regression model has different intercepts for seven groups or categories. Then to ensure the quality of the regression model, we need to include dummy variables in the model, an intercept.
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Three alleles (alternative versions of a gene) A, B, and O determine the four blood types A (AA or AO), B (BB or BO), O (OO), and AB. The Hardy-Weinberg Law states that the proportion of individuals in a population who carry two different alleles is P=2pq+2pr+2rq where p,q, and r are the proportions of A, B, and O in the population. Use the fact that p+q+r=1 to find the maximum value of P. (DO NOT USE LAGRANGE MULTIPLIERS)
X G How do stereotypes affect social Xt https://wccs.instructure.com/courses/3721/assignments/73999 MTH 112 (20217) E-Learning Assignments > Quiz 1 (1.1-1.5) Quiz 1 (1.1-1.5) ing 2019 ome Wright MTH112 20217 E-Learning Spring 2019 yLab and astering nouncements ades llabus odules nferences at ainfuse gister Blast abama Virtual rary CCS Library aluations and rveys Review Quiz: Quiz 1 (1.1-1.5) Score: 0.5 of 1 pt &1.4.25 2 of 12 the point-slope form of the line satisfying the given conditions. Then use the point-slope form of the equation to write th Passing through (8,16) and (9.18) Type the point-slope form of the equation of the line у-16-2(x-8 (Simplify your answer. Use integers or fractions for any number in the equation.) Type the slope-intercept form of the equation of the line y=2x (Simplify your answer. Use integers or fractions for any number in the equation.) Question is complete. Tap on the red indicators to see incorrect answers Previous re to search
6 Trout population Suppose 200 trout are caught, tagged, and released in a lake's general population. Let T denote the number of tagged fish that are recaptured when a sample of n trout are caught at a later date. The validity of the mark- recapture method for estimating the lake's total trout popula- tion is based on the assumption that Tis directly proportional to n. If 10 tagged trout are recovered from a sample of 300, estimate the total trout population of the lake.
Match the problem with the hypothesis. Problem A B C U E A study wanted to see if people's weight changed on new drug. They weighed 6 people before and after the trial. The six before weights were 150, 160, 175, 162, 180, 240. The respective after weights are 142, 171, 162, 142, 171, 235. A study wanted to know if a new drug was affected weight differently then a drug in a previous study. In the previous study, the participants lost 15 pounds on average. In the new study, they sampled 60 people. The average weight lost was 18 pounds with a standard deviation of 9 pounds. A study wanted to compare the weight loss between two drugs. They sampled 60 people. 30 who took drug A and 30 who took drug B. With drug A the average weight loss was 15 pounds with a standard deviation of 8 pounds. With drug B the average weight loss was 18 pounds with a standard deviation of 9 pounds. A study wanted to compare the percentage of a certain town who planned to vote for candidate A to the national…
Expected value = E(x) = x1P1+x2P2+ ... + xnPn Where x = the outcome and P = probability of outcome Dr. Kimball likes to go fishing with his son. To motivate his son, he pays him for the first fish that he catches. There are two types of edible fish that his son can catch: Trout and Salmon. If he catches a Trout he pays him $5, if he catches Salmon $3. There is a 20% chance that he will catch a trout and 50% that he will catch a Salmon.

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