Mathematics, 22.07.2020 22:01 Pmedellin27
The marketing manager of a large retail company wants to analyze the number of small appliances sold at their stores. She selects a random sample of 70 stores, and records the number of small appliances sold in the month of September. Data show mean sales of 53 units of small appliances with a standard deviation of 12 units. a)Compute a 90% confidence interval for the average number of units sold at the stores. [2 pts] b)A similar study conducted last year showed that the stores sold on average 50 units. The marketing manager is happy because sales are up from 50% to 53%, that is a 3% increase. Explain in a language that the manager can understand why she cannot be certain that sales increased from last year. [2 pts]
Answers: 2
Mathematics, 21.06.2019 16:30
The equation of a circle is (x - 3)2 + (y - 7)2 = 25. determine the length of the radius. 4 25 12.5 5 write the standard equation of the circle with center (2, 3) and a diameter of 12. (x - 2)2 + (y - 3)2 = 36 (x + 2)2 + (y + 3)2 = 12 (x - 2)2 + (y - 3)2 = 6 (x - 3)2 + (y - 2)2 = 36 the equation of a circle is (x + 3)2 + (y + 7)2 = 25. where is (3, 4) located in relation to the circle? on the circle in the interior of the circle in the exterior of the circle at the center of the circle
Answers: 1
Mathematics, 22.06.2019 03:30
The half-life of a certain material is 0.002 second. approximately how much of a 14-gram sample will be left after 0.004 second? a. 12 grams b. 3.5 grams c. 0.06 gram d. 7 grams
Answers: 3
The marketing manager of a large retail company wants to analyze the number of small appliances sold...
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