Mathematics, 16.10.2020 04:01 SGARCIA25
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For a 4-units class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on students, and the distribution of total study hours per week is bell-shaped with a mean of 14 hours and a standard deviation of 3 hours.
Use the Empirical Rule to answer the following questions.
a) 68% of the students have study hours that are between
___and
c) What percentage of the students have study hours that are below 23? ___%
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Mathematics, 21.06.2019 18:30
Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?
Answers: 1
Mathematics, 21.06.2019 18:30
Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =
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Mathematics, 21.06.2019 18:30
The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.
Answers: 3
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For a 4-units class like Statistics, students should spend average of 12 hour...
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