Ten randomly selected people took an IQ test A, and the next day they took a very similar IQ test B. Their scores are shown in the table below.PersonABCDEFGHIJTest A8976106100879596123113112Test B9279106104899995126117116Use a 0.01 significance level(a) What is the Test-Statistic? ________(b) construct a 99% confidence interval for the mean of the differences. (again use tests A and B)___________ < u < __________

Given : Test A Test B d 89 92 -3 76 79 -3 106 106 0 100 104 -4 87 89 -2 95 99 -4…

Answered: Ten randomly selected people took an IQ…

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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Ten randomly selected people took an IQ test A, and the next day they took a very similar IQ test B. Their scores are shown in the table below.

Person	A	B	C	D	E	F	G	H	I	J
Test A	89	76	106	100	87	95	96	123	113	112
Test B	92	79	106	104	89	99	95	126	117	116

Use a 0.01 significance level

(a) What is the Test-Statistic? ________

(b) construct a 99% confidence interval for the mean of the differences. (again use tests A and B)

___________ < u < __________

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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