Mathematics, 18.11.2020 14:00, OhDee8269
Two online retailers offer a particular style of webcam for sale. The prices of these cameras vary day by day. Consider two groups: Group #1 consists of consumers who purchased a camera from retailer #1 during the past three months and Group #2 consistes of consumers who purchased a camera from retailer #2 during the same period of time. A 99% confidence interval for 1−2
μ
1
−
μ
2
, the difference in population mean sale prices, is 30 to 60 dollars.
(b) The confidence interval provides no strong evidence to support or refute the claim that, on average, students who purchased a camera from retailer #1 spent dollars more than those who purchased a camera from retailer #2.
Answers: 3
Mathematics, 21.06.2019 16:00, isabellemaine
Martin likes to make flower bouquets that have 3 daffodils and 4 tulips per vase. a daffodil has a mass of d grams, a tulip has a mass of t grams, and the vase has a mass of u grams. the expression 5(3d + 4t + v) describes the mass of 5 bouquets. match each amount in the situation with the expression that represents it. situation expression number of bouquets mass of one bouquet mass of the tulips in one bouquet 4t mass of the daffodils in one bouquet 3d + 4t + v
Answers: 2
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