22The P-value for this test is _____. At α = 0.05 what is your conclusion?a0.0389Do not reject H₀. Do not conclude the mean textbook expense is greater than $660.b0.0389Reject H₀. Conclude the mean textbook expense is greater than $660. c0.0822Do not reject H₀. Do not conclude the mean textbook expense is greater than $660.d0.0822Reject H₀. Conclude the mean textbook expense is greater than $660. Questions 20-22 are relatedAccording to the National Association of College Stores, average textbook cost is $660 a year. You think this is anunderstatement and want to prove that the average cost is greater than $660 a year.You survey a random sample of students. The sample data are below.605470565725865815645535600775830720485575680735900895580775620765715710745670520720750565750690690670590665590900545755695585750750645705880740610650540515570625685680625750725345700655600535600685665870445895805490610805650650775615680510595680770785725795495530840735600630630735625660725940715

Answered: Image /qna-images/answer/f05f8b83-b329-40ed-8d92-7393633ca621.jpg

Answered: 22 The P-value for this test is _____.…

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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22	The P-value for this test is _____. At α = 0.05 what is your conclusion?

a	0.0389	Do not reject H₀. Do not conclude the mean textbook expense is greater than $660.
b	0.0389	Reject H₀. Conclude the mean textbook expense is greater than $660.
c	0.0822	Do not reject H₀. Do not conclude the mean textbook expense is greater than $660.
d	0.0822	Reject H₀. Conclude the mean textbook expense is greater than $660.

Questions 20-22 are related
According to the National Association of College Stores, average textbook cost is $660 a year. You think this is an
understatement and want to prove that the average cost is greater than $660 a year.
You survey a random sample of students. The sample data are below.
605
470
565
725
865
815
645
535
600
775
830
720
485
575
680
735
900
895
580
775
620
765
715
710
745
670
520
720
750
565
750
690
690
670
590
665
590
900
545
755
695
585
750
750
645
705
880
740
610
650
540
515
570
625
685
680
625
750
725
345
700
655
600
535
600
685
665
870
445
895
805
490
610
805
650
650
775
615
680
510
595
680
770
785
725
795
495
530
840
735
600
630
630
735
625
660
725
940
715

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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