ompany believes that there is no difference between the current financial year and the previous financial year in term of quantities sold in three sizes of its energy drinks (Large, Medium and Small). The data from the previous financial year showed that the ratio between the three sizes are 2:3:5. In the current year, a random sample of 50 invoices shows that 12 Large, 14 medium and 24 small sizes were sold. Use the Chi-squared hypothesis testing method to test whether there are any changes in the proportion of the quantities sold between the current and previous financial year with a 10% level of significance. The MS system calculated that the Chi-squared test stat is 4.522 Critical value: At 1% = 9.210 At 5% = 5.991 At 10% = 4.605 State the decision rule State the alternative hypothesis Conclusion and decision State the null hypothesis
ompany believes that there is no difference between the current financial year and the previous financial year in term of quantities sold in three sizes of its energy drinks (Large, Medium and Small). The data from the previous financial year showed that the ratio between the three sizes are 2:3:5. In the current year, a random sample of 50 invoices shows that 12 Large, 14 medium and 24 small sizes were sold. Use the Chi-squared hypothesis testing method to test whether there are any changes in the proportion of the quantities sold between the current and previous financial year with a 10% level of significance. The MS system calculated that the Chi-squared test stat is 4.522 Critical value: At 1% = 9.210 At 5% = 5.991 At 10% = 4.605 State the decision rule State the alternative hypothesis Conclusion and decision State the null hypothesis
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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A company believes that there is no difference between the current financial year and the previous financial year in term of quantities sold in three sizes of its energy drinks (Large, Medium and Small). The data from the previous financial year showed that the ratio between the three sizes are 2:3:5. In the current year, a random sample of 50 invoices shows that 12 Large, 14 medium and 24 small sizes were sold. Use the Chi-squared hypothesis testing method to test whether there are any changes in the proportion of the quantities sold between the current and previous financial year with a 10% level of significance.
The MS system calculated that the Chi-squared test stat is 4.522
Critical value:
At 1% = 9.210
At 5% = 5.991
At 10% = 4.605
| State the decision rule | |
| State the alternative hypothesis | |
| Conclusion and decision | |
| State the null hypothesis |
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