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  3. a soft drink manufacturing and exporting company markets a new...

Question: a soft drink manufacturing and exporting company markets a new...

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  1. A soft drink manufacturing and exporting company markets a new brand of a soft drink with two experimental flavors. Flavor 1 is sent to thirteen stores; the average sales in the first month is 45 units with a sample standard deviation of 7 units. Flavor 2 is sent to ten stores; the average sales in the first month is 38 units with a sample standard deviation of 6 units. Assume that the populations from which the samples are taken follow normal distribution. 

    Calculate the degrees of freedoms for the test.
    a.
    22
    b.
    23
    c.
    9
    d.
    12
    e.
    21
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