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Mathematics, 21.06.2019 18:30
At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.
Answers: 2
Mathematics, 21.06.2019 21:40
The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?
Answers: 2
Mathematics, 21.06.2019 21:40
What is the value of x in the equation 1.5x+4-3=4.5(x-2)?
Answers: 2
Mathematics, 21.06.2019 23:00
Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.
Answers: 1
Mathematics, 08.04.2020 20:46
Mathematics, 08.04.2020 20:46
Mathematics, 08.04.2020 20:46
Mathematics, 08.04.2020 20:46
Mathematics, 08.04.2020 20:46
History, 08.04.2020 20:46
Mathematics, 08.04.2020 20:46
History, 08.04.2020 20:46