Mathematics, 26.06.2019 16:50 loganferg5429
Every user of statistics should understand the distinction between statistical significance and practical importance. a sufficiently large sample will declare very small effects statistically significant. let us suppose that sat mathematics (satm) scores in the absence of coaching vary normally with mean μ = 510 and σ = 90. suppose further that coaching may change μ but does not change σ. an increase in the satm score from 510 to 513 is of no importance in seeking admission to college, but this unimportant change can be statistically very significant. to see this, calculate the p-value for the test of the given hypotheses in each of the following situations.
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Mathematics, 21.06.2019 17:40
Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882
Answers: 1
Mathematics, 21.06.2019 20:00
0if x and y vary inversely and y=6 as x=7, what is the constant of variation?
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Mathematics, 22.06.2019 02:00
An isosceles trapezoid with a perimeter of 42 inches. each of the congruent non parallel sides is 5 inches long, and the trapezoid is 3 inches tall. how long are the two parallel sides? a. 10 in, 22 in b. 16 in, 16 in c. 10 in, 16 in d. 12 in, 20 in
Answers: 1
Every user of statistics should understand the distinction between statistical significance and prac...
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