Mathematics, 12.02.2020 01:54 davidb1113
The Post Office has established a record in a major midwestern city for delivering 90 percent of its local mail the next working day. Answer the following questions based on this information:a. If you mail eight local letters, what is the probability that all of them will be delivered the next day?b. If you mail eight local letters, what is the average number you expect to be delivered the next day?c. Calculate the standard deviation of the number delivered when 8 local letters are mailed. d. When there are 8 local letters mailed, what is the probability that the number delivered will be within 2 standard deviations of the mean?
Answers: 3
Mathematics, 21.06.2019 15:30
Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.
Answers: 3
Mathematics, 21.06.2019 21:00
Abakery recorded the number of muffins and bagels it sold for a seven day period. for the data presented, what does the value of 51 summarize? a) mean of bagels b) mean of muffins c) range of bagels d) range of muffins sample # 1 2 3 4 5 6 7 muffins 61 20 32 58 62 61 56 bagels 34 45 43 42 46 72 75
Answers: 2
Mathematics, 21.06.2019 21:10
The table below shows the approximate height of an object x seconds after the object was dropped. the function h(x)= -16x^2 +100 models the data in the table. for which value of x would this model make it the least sense to use? a. -2.75 b. 0.25 c. 1.75 d. 2.25
Answers: 2
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