Mathematics, 10.04.2020 20:17 Knownothing
The marketing club at school is opening a student store. They randomly survey 50 students about how much money they
spend on lunch each day. What is the expected value for a student to spend on lunch each day?
Student Lunch Survey
Number of Dollars Spent on
Students
Lunch Each Day
S10
12
$8
S6
55
54
S250
5511
5518
S90
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Answers: 2
Mathematics, 21.06.2019 14:30
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Answers: 2
Mathematics, 21.06.2019 15:30
Astore manager records the total visitors and sales, in dollars, for 10 days. the data is shown in the scatter plot. what conclusion can the store manager draw based on the data? question 3 options: an increase in sales causes a decrease in visitors. an increase in sales is correlated with a decrease in visitors. an increase in visitors is correlated with an increase in sales.
Answers: 1
Mathematics, 21.06.2019 17:20
Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers.a) one of the 400 passengers is selected uniformly at random.let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driverβs airplane. find var(y) for y as given in the problem
Answers: 3
Mathematics, 21.06.2019 17:30
Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny
Answers: 1
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