Mathematics, 14.07.2019 15:30 ciarra31
Ahealth food store has launched a new pack of vitamins for children. the store records the number of packs ordered by a random sample of 100 online customers and the number of packs ordered by a random sample of 100 walk-in customers. two dot plots are shown one below the other. the title for the top dot plot is online customers and the title for the bottom plot is walk in customers. below the line for each dot plot is written number of packs. there are markings from 2 to 6 on each line at intervals of one. for the top line there are 0, 0, 1, 4, 5 dots respectively for marks from 2 to 6. for the bottom line there are 3, 6, 1, 0, 0 dots respectively for marks from 2 to 6. on the right side, towards the middle of the two plots is shown a dot symbol equal to 10 customers. which of the following inferences can be drawn about the buying pattern of the online customers versus that of the walk-in customers?
Answers: 2
Mathematics, 22.06.2019 00:30
1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?
Answers: 2
Mathematics, 22.06.2019 00:30
Sawsan recorded the favorite sport of students at her school. she surveyed 200 students. how many students chose tennis?
Answers: 2
Ahealth food store has launched a new pack of vitamins for children. the store records the number of...
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