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Name: please use the calculator method ti83 or 84 A truck farmer decides to
Uploaded: 2024-03-20T07:07:12.000Z
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Description: please use the calculator method ti83 or 84 A truck farmer decides to test a new non-polluting insecticide which also, according to the inventor, definitely reduces the loss attributable to a common pest. The farmer treats 31 acres with the new spray

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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please use the calculator method ti83 or 84

A truck farmer decides to test a new non-polluting insecticide which also, according to the inventor, definitely reduces the loss attributable to a common pest. The farmer treats 31 acres with the new spray and 41 with the standard spray. For the new insecticide, the mean yield is 980 pounds with a standard deviation of 60. For the standard spray there is a mean yield of 1040 pounds with a standard deviation of 50 pounds. At level of significance 0.05 do the results show that the new spray is worse than the old? State hypotheses, P-value, and conclusion.

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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