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svetlana [45]
2 years ago
14

Students are selling tickets to a school fundraiser. For every 15 tickets a student sells, a student earns a T-shirt as a reward

. What are the independent and dependent variables in this situation? *
Mathematics
1 answer:
katrin [286]2 years ago
6 0

Step-by-step explanation:

let y=dependent variable

let x=independent variable.

y=number of t-shirts

x=number of tickets  

if u need the function it would be

y=x/15

but you don't so therefore:

T-shirt = dependent variable

while tickets= independent variable .

Hope this helps :)

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Answer:

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Step-by-step explanation:

1. The Chi squared test is given as follows;

\chi ^{2} = \sum \dfrac{\left (Observed - Expected  \right )^{2}}{Expected  }

Therefore,

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Cranberry juice       8           42      84     50

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Control                    18          30      60    50

The chi-squared statistic is given as follows;

\chi ^{2} = \dfrac{\left (8- 18\right )^{2}}{18} +  \dfrac{\left (42 - 30\right )^{2}}{30} = 10.36

The chi-squared statistic = 10.36

The degrees of freedom, df = 18 - 1 = 17 since the all of the expected count have a minimum value of 18

With the aid of the calculator we find the p value as p as follows;

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The p-value for the test = 0.89  

2. The range of the p-value from the Chi squared table is given as follows;

0.75 < p-value < 0.90.

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