Mathematics, 08.07.2020 19:01 danny223
A sample of eight students were selected to test the effectiveness of a course designed to improve typing skills. Their typing scores before and after the course are recorded below. Test the course for effectiveness at Ξ± = 0.01. Student 1 2 3 4 5 6 7 8 Mean Std. dev. Before 45 38 60 35 70 48 39 49 48 11.88 After 56 42 62 39 75 50 42 56 52.75 12.13 Difference -11 -4 -2 -4 -5 -2 -3 -7 -4.75 3.012 What is the test statistic value?
Answers: 1
Mathematics, 21.06.2019 20:00
How does the graph of g(x)=βxββ3 differ from the graph of f(x)=βxβ? the graph of g(x)=βxββ3 is the graph of f(x)=βxβ shifted right 3 units. the graph of g(x)=βxββ3 is the graph of f(x)=βxβ shifted up 3 units. the graph of g(x)=βxββ3 is the graph of f(x)=βxβ shifted down 3 units. the graph of g(x)=βxββ3 is the graph of f(x)=βxβ shifted left 3 units.
Answers: 1
Mathematics, 21.06.2019 20:00
For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.
Answers: 1
Mathematics, 21.06.2019 22:10
Atype of plant is introduced into an ecosystem and quickly begins to take over. a scientist counts the number of plants after mmonths and develops the equation p(m)= 19.3(1.089)^m to model the situation. most recently, the scientist counted 138 plants.assuming there are no limiting factors to the growth of the plants, about how many months have passed since the plants werefirst introduced? a)o 6.1b)0.6.6c)10 72d)o 23.1
Answers: 3
A sample of eight students were selected to test the effectiveness of a course designed to improve t...
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