Mathematics, 08.11.2019 11:31 dragonstar9771

# Twenty students in class a and 20 students in class b were asked how many hours they took to prepare for an exam. the data sets represent their answers. class a: {2, 5, 7, 6, 4, 3, 8, 7, 4, 5, 7, 6, 3, 5, 4, 2, 4, 6, 3, 5} class b: {3, 7, 6, 4, 3, 2, 4, 5, 6, 7, 2, 2, 2, 3, 4, 5, 2, 2, 5, 6} which statement is true for the data sets? a. the mean study time of students in class a is less than students in class b. b. the mean study time of students in class b is less than students in class a. c. the median study time of students in class b is greater than students in class a. d. the range of study time of students in class a is less than students in class b. e. the mean and median study time of students in class a and class b is equal.

Answers: 1

Mathematics, 21.06.2019 14:30

Na calculadora, apertei algumas teclas. depois, pressionei tres vezes a tecla =, e apareceu a sequência: 420 a-) quais teclas apertei inicialmente? b-) se eu apertar mais três vezes a tecla =, que números aparecerão?

Answers: 2

Mathematics, 21.06.2019 19:30

Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm^2. what is the area of the second triangle?

Answers: 1

Mathematics, 21.06.2019 21:30

How does reflecting or rotating a figure change the interior angles of the figure?

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Mathematics, 21.06.2019 22:20

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)

Answers: 2

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