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A restaurant located in an office building decides to adopt a new strategy for attracting customers to the restaurant. Every week it advertises in the city newspaper. To measure how well the advertising is working, the restaurant owner recorded the weekly gross sales for the 15 weeks after the campaign began and the weekly gross sales for the 15 weeks immediately prior to the campaign. Data on weekly gross sales (in dollars) for 15 weeks before and after the program were recorded and analyzed. Below are the outputs.
Paired Samples StatisticsMean
N
Std. Deviation
Std. Error Mean
Pair 1
before
5392.13
15
398.035
102.772
after
5746.06
409.010
105.605
for all x = (x1, x2), y = (y1, y2) ∈ V , α1, α2, β1, β2 some fixed real numbers, and scalar multiplication is the usual scalar multiplication. What values of α1 , α2 , β1 , β2 make V a vector space (over R).
A function f : Z×Z → Z×Z is defined as f (m,n) = (m+ n,2m+ n). Verify whether this function is injective and whether it is surjective.
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In a certain population of women 4% develop symptoms of a classic disease, 20% are smokers, and 3% are smokers and have developed the symptoms of the disease.a) Find the probability that a randomly selected woman from this population has developed sy..
How can write co variance using summation notation
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Find the greatest common factor for the group of terms: -30a3, 5a5. Find the greatest common factor for these terms and explain how you arrived at your answer.
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a rectangular storage container with an open top has a volume of 10 m3. the length of its base is twice its width.
A Chemist needs 100 milliliters of a 76% solution but has only 55% and 85% solutions available. Find how many milliliters of each that should me mixed to get the desired soultion?
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