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A department store finds that in a random sample of 200 customers, 60% of the sampled customers had browsed its website prior to visiting the store. Based on this data, a 90% confidence interval for the population proportion of customers that browse the store’s website prior to visiting the store will be between
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X^2/100+y^2/25=1 the length of the major axis is: a)5 b)10 c)20
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What are the solutions for the following system? -2x^2+y=-5 y=-3x^2+5
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