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a=0.1, level of significance. Use two-tailed test 4. In an attempt to compare the performance of students with more than one personal electronic gadgets and those with no or only one personal electronic gadget, The mean grade in one term and the standard deviation are shown in the table: Students with personal electronic gadgets 0-1 >1 Mean x₁ = 83 x₂ = 79 Standard Deviation Mean S₁= 10 S₂ = 14 X₁ = 83 X2 = 79 Is there a significant difference in the mean grades of students with one or no personal electronic gadget and those with more than one personal electronic gadgets? @ a = 0.05 and two-tailed test. 5. Perform Exercise no. 2, assuming one-tailed test, @a= 0.01 and n₁ = 15. Students with personal electronic gadgets 0-1 >1 sample Standard Deviation n₁ = 12 m2=12 Si= 10 S₂= 14 n₁ =15 1₂ = 12

a=0.1, level of significance. Use two-tailed test 4. In an attempt to compare the performance of students with more than one personal electronic gadgets and those with no or only one personal electronic gadget, The mean grade in one term and the standard deviation are shown in the table: Students with personal electronic gadgets 0-1 >1 Mean x₁ = 83 x₂ = 79 Standard Deviation Mean S₁= 10 S₂ = 14 X₁ = 83 X2 = 79 Is there a significant difference in the mean grades of students with one or no personal electronic gadget and those with more than one personal electronic gadgets? @ a = 0.05 and two-tailed test. 5. Perform Exercise no. 2, assuming one-tailed test, @a= 0.01 and n₁ = 15. Students with personal electronic gadgets 0-1 >1 sample Standard Deviation n₁ = 12 m2=12 Si= 10 S₂= 14 n₁ =15 1₂ = 12

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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Please use the 5 steps: Step 1: State null & alternate hypothesis Step 2: Select a level of significance Step 3: Identify the test statistic Step 4: Formulate a decision rule Step 5: Take a sample to arrive at a decision (Reject or do not reject null hypothesis) Please answer 2-5 only
WEEK 8 EXERCISES: T-test Test the hypothesis using 5 steps. 1. A ten (10) randomly selected groceries in San Francisco has an average sales of 41 Junousand dollars every 6 months from various goods with a standard deviation of 5.2thousand doll is enough evidence to conclude that the groceries are not an average of 42 thousand dollars (μ) from sous goo ery 6 months? Test at 0.05 level of significance. Use one-tailed test. To 2. A certain manager wishes to find out if the proposed system of operations increases the gross sales of the products of the compared with existing system. compare the results, six branches for each system are randomly selected for assessment, the result is as follows: Proposed system x₁ = 42.5, X2 = 32.6 S₁= 5.7. S₂= 4.8 ni= 6, 112= 6 Is the proposed system significantly better than the existing system? Test at a=0.01 (1%) and one-tailed test. Existing system Average sales in million: Standard deviation: No. of branches 3. Oil wells in a large field produce an average of 33.5(µ) barrels per day,A fifteen (15) randomly selected oil wells produce an average of 30 (x)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(µ) barrels of crude oil per day? Test at
Transcribed Image Text:WEEK 8 EXERCISES: T-test Test the hypothesis using 5 steps. 1. A ten (10) randomly selected groceries in San Francisco has an average sales of 41 Junousand dollars every 6 months from various goods with a standard deviation of 5.2thousand doll is enough evidence to conclude that the groceries are not an average of 42 thousand dollars (μ) from sous goo ery 6 months? Test at 0.05 level of significance. Use one-tailed test. To 2. A certain manager wishes to find out if the proposed system of operations increases the gross sales of the products of the compared with existing system. compare the results, six branches for each system are randomly selected for assessment, the result is as follows: Proposed system x₁ = 42.5, X2 = 32.6 S₁= 5.7. S₂= 4.8 ni= 6, 112= 6 Is the proposed system significantly better than the existing system? Test at a=0.01 (1%) and one-tailed test. Existing system Average sales in million: Standard deviation: No. of branches 3. Oil wells in a large field produce an average of 33.5(µ) barrels per day,A fifteen (15) randomly selected oil wells produce an average of 30 (x)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(µ) barrels of crude oil per day? Test at
a=0.1, level of significance. Use two-tailed test 4. In an attempt to compare the performance of students with more than one personal electronic gadgets and those with no or only one personal electronic gadget, The mean grade in one term and the standard deviation are shown in the table: Students with personal electronic gadgets 0-1 >1 Mean x₁ = 83 x₂ = 79 Standard Deviation Mean Si=10 S₂ = 14 X₁ = 83 X2 = 79 Is there a significant difference in the mean grades of students with one or no personal electronic gadget and those with more than one personal electronic gadgets? @ a = 0.05 and two-tailed test. 5. Perform Exercise no. 2, assuming one-tailed test, @a= 0.01 and n₁ = 15. Students with personal electronic gadgets 0-1 >1 sample Standard Deviation n₁ = 12 m2 =12 Si= 10 S₂= 14 n₁ =15 n₂ = 12
Transcribed Image Text:a=0.1, level of significance. Use two-tailed test 4. In an attempt to compare the performance of students with more than one personal electronic gadgets and those with no or only one personal electronic gadget, The mean grade in one term and the standard deviation are shown in the table: Students with personal electronic gadgets 0-1 >1 Mean x₁ = 83 x₂ = 79 Standard Deviation Mean Si=10 S₂ = 14 X₁ = 83 X2 = 79 Is there a significant difference in the mean grades of students with one or no personal electronic gadget and those with more than one personal electronic gadgets? @ a = 0.05 and two-tailed test. 5. Perform Exercise no. 2, assuming one-tailed test, @a= 0.01 and n₁ = 15. Students with personal electronic gadgets 0-1 >1 sample Standard Deviation n₁ = 12 m2 =12 Si= 10 S₂= 14 n₁ =15 n₂ = 12
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