Mathematics, 24.07.2019 12:00 Itasouu
In a large university the average age of all the students is 24 years with a standard deviation of 9 years. a random sample of 36 students is selected. a. determine the standard error of the mean. b. what is the probability that the sample mean will be larger than 19.5? c. what is the probability that the sample mean will be between 25.5 and 27 years?
Answers: 1
Mathematics, 21.06.2019 20:30
The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?
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Mathematics, 22.06.2019 00:10
The mass of a marine organism, in pounds, p years after it is born is given by the polynomial function r(p) = -4p2 + 300p. find the mass when p = 20 years.
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Mathematics, 22.06.2019 00:30
Which equation could represent the relationship shown in the scatter plot? y=−3x−2 y=−3/4x+10 y=−2/3x+1 y=9x−12 scatter plot with x axis labeled variable x and y axis labeled variable y. points go from upper left to lower right.
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Mathematics, 22.06.2019 04:00
Ineed ! what is the connection between ratios, fractions, and percents? give an example with your answer.
Answers: 2
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