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You Can Do This 1 D.G Co. has an average gross sales of P37 million per week from their products in all of their outlets with a standard deviation of P6 million. An area manager found out that the average gross sales from the 32 outlets under his jurisdiction is P34.8 million per week. Is the mean sales of the products of all of the outlets significantly different (uom the mean sales of the outlets in the area of the manager? Use a = 5%. Perform the 1tosts

You Can Do This 1 D.G Co. has an average gross sales of P37 million per week from their products in all of their outlets with a standard deviation of P6 million. An area manager found out that the average gross sales from the 32 outlets under his jurisdiction is P34.8 million per week. Is the mean sales of the products of all of the outlets significantly different (uom the mean sales of the outlets in the area of the manager? Use a = 5%. Perform the 1tosts

MATLAB: An Introduction with Applications
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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the answ Checking our van the final answer as shown in the screenshot below. Unequal Calculate Statistical calcetators Z-Test AMOVA Chi-square test Two-Sample Z-test One-proportion Z-test Two-proportion 2-test One-Sample 2-test Fisher's exect test Z-score transf, Liefors test Calculator Result Survival anslysis Semple 1 Semple 2 Ftest velus 0.64 0.56 0.4378 T-test Preportion ons-telled pehue 24est 0.2011 Sample stre 55 50 Motecutar blology tools 0% oonfidenos Internvats Alpha 0.01 pper Inf lower Verlance O Equel 0,1421 O Let O Both Might Tell/side The two samples are not significantly different. Name: Fr Strand: ColculateReset owt don to baisr You Can Do This t 1 D.G Co. has an average gross sales of P37 million per week from their products in all of their outlets with a standard deviation of P6 million. An area manager found out that the average gross sales from the 32 outlets under his jurisdiction is P34.8 million week. Is the mean sales of the products of all of the outlets significantly different per from the mean sales of the outlets in the area of the manager? Use a = 5%. Perform the hypothesis testing for both one-tailed test and two-tailed tests. %3D 2 A teacher wants to find out if the webcasting methods of teaching social sciences subjects is more effective than the existing standard method of teaching. Two classes of approximately equal intelligence were selected. From one class, the teacher randomly selected a group of students as experimental group for webcasting methods. From another class, the teacher then selected another group of students as sample for existing standard method of teaching. After one trimester, the same tests were given to the students. Their mean scores are shown in the following table: Method of teaching Mean score Standard deviation Sample size Webcasting method X, = 82.3 S = 12 dt daiw bo %3D n = 42 otExisting standard method X, = 78.5 S2 = 9 %3D 2 N; = 38 Test the hypothesis whether or not the webcasting method of teaching social sciences subjects is more effective than the existing standard method of teaching. Use a = 0 05 TEST OF HYPOTHESIS USING THE Z-TEST 175
Transcribed Image Text:the answ Checking our van the final answer as shown in the screenshot below. Unequal Calculate Statistical calcetators Z-Test AMOVA Chi-square test Two-Sample Z-test One-proportion Z-test Two-proportion 2-test One-Sample 2-test Fisher's exect test Z-score transf, Liefors test Calculator Result Survival anslysis Semple 1 Semple 2 Ftest velus 0.64 0.56 0.4378 T-test Preportion ons-telled pehue 24est 0.2011 Sample stre 55 50 Motecutar blology tools 0% oonfidenos Internvats Alpha 0.01 pper Inf lower Verlance O Equel 0,1421 O Let O Both Might Tell/side The two samples are not significantly different. Name: Fr Strand: ColculateReset owt don to baisr You Can Do This t 1 D.G Co. has an average gross sales of P37 million per week from their products in all of their outlets with a standard deviation of P6 million. An area manager found out that the average gross sales from the 32 outlets under his jurisdiction is P34.8 million week. Is the mean sales of the products of all of the outlets significantly different per from the mean sales of the outlets in the area of the manager? Use a = 5%. Perform the hypothesis testing for both one-tailed test and two-tailed tests. %3D 2 A teacher wants to find out if the webcasting methods of teaching social sciences subjects is more effective than the existing standard method of teaching. Two classes of approximately equal intelligence were selected. From one class, the teacher randomly selected a group of students as experimental group for webcasting methods. From another class, the teacher then selected another group of students as sample for existing standard method of teaching. After one trimester, the same tests were given to the students. Their mean scores are shown in the following table: Method of teaching Mean score Standard deviation Sample size Webcasting method X, = 82.3 S = 12 dt daiw bo %3D n = 42 otExisting standard method X, = 78.5 S2 = 9 %3D 2 N; = 38 Test the hypothesis whether or not the webcasting method of teaching social sciences subjects is more effective than the existing standard method of teaching. Use a = 0 05 TEST OF HYPOTHESIS USING THE Z-TEST 175
LESSON Test o in En You Can Do This Test the hypothesis of the following problems using the steps discussed previo an average evidence to conclude that the groceries are not selling every 6. test. After this le gross able to: test th as follows: two o Proposed system Existing system variab perfo fit te x, = 42.5 x, = 32.6 %3D Average sales in million Standard deviation S; = 5.7 S, = 4.8 prop %3D %3D Number of branches = 6 n, = 6 use %3D %3D chi- Is the proposed system significantly better than the existing system? Test at a = 0 01 and use a one-tailed test. %3D 3. Oil wells in a large field produce an average of 33.5 barrels per day. Fifteen randomly selected oil wells produce an average of 30 barrels of crude oil per day with a standard deviation of 3.5 barrels. Is this enough evidence to conclude that the oil wells are not producing an average of 33.5 barrels of crude oil per day? Test at a = 0.1. Use a two-tailed test. 4. In an attempt to compare the performance of students with more than one electronic gadget and those with only one or none, the mean grades of students and the standard deviations were taken and are shown in the table below. d Students with 0-1 gadgets standard mean Students with more than 1 gadget deviation sample X, = 83 %3D 1 S, = 10 n, =12 X, = 79 Is there a significant difference between the mean grades of students with more than one %3D electronic gadget and those with one or none? Use a = 0.05 and use a two-tailed test. S, = 14 n =12 %3D 190- TEST OF HYPOTHESIS
Transcribed Image Text:LESSON Test o in En You Can Do This Test the hypothesis of the following problems using the steps discussed previo an average evidence to conclude that the groceries are not selling every 6. test. After this le gross able to: test th as follows: two o Proposed system Existing system variab perfo fit te x, = 42.5 x, = 32.6 %3D Average sales in million Standard deviation S; = 5.7 S, = 4.8 prop %3D %3D Number of branches = 6 n, = 6 use %3D %3D chi- Is the proposed system significantly better than the existing system? Test at a = 0 01 and use a one-tailed test. %3D 3. Oil wells in a large field produce an average of 33.5 barrels per day. Fifteen randomly selected oil wells produce an average of 30 barrels of crude oil per day with a standard deviation of 3.5 barrels. Is this enough evidence to conclude that the oil wells are not producing an average of 33.5 barrels of crude oil per day? Test at a = 0.1. Use a two-tailed test. 4. In an attempt to compare the performance of students with more than one electronic gadget and those with only one or none, the mean grades of students and the standard deviations were taken and are shown in the table below. d Students with 0-1 gadgets standard mean Students with more than 1 gadget deviation sample X, = 83 %3D 1 S, = 10 n, =12 X, = 79 Is there a significant difference between the mean grades of students with more than one %3D electronic gadget and those with one or none? Use a = 0.05 and use a two-tailed test. S, = 14 n =12 %3D 190- TEST OF HYPOTHESIS
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