Mathematics, 17.10.2020 16:01 bm42400
A fashion designer wants to know how many new dresses women buy each year. Assume a previous study found the standard deviation to be 1.3. He thinks the mean is 5.5 dresses per year. What is the minimum sample size required to ensure that the estimate has an error of at most 0.1 at the 95% level of confidence? Round your answer up to the next integer.
Answers: 2
Mathematics, 21.06.2019 12:40
Jamie is hiking up a small mountain. he climbs up at a constant rate of 300 feet/hour until he reaches the peak at 1,500 feet. after that, he hikes down at the same rate to the base of the mountain. the equation that models jamie’s elevation, e, after t hours is e = . jamie’s elevation will be 600 feet after hours and after hours.
Answers: 1
Mathematics, 21.06.2019 23:00
Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?
Answers: 2
Mathematics, 22.06.2019 01:10
|2x - 6| > 10 {x|x < -8 or x > 2} {x|x < -2 or x > 8} {x|-2 < x < 8}
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Mathematics, 22.06.2019 01:30
At store a, erasers are sold individually. the cost y of x erasers is represented by the equation y=0.75x. the costs of erasers at store b are shown in the graph.
Answers: 2
A fashion designer wants to know how many new dresses women buy each year. Assume a previous study f...
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