In a particular chi-square goodness-of-fit test there are four categories and 230 observations. Use the 0.01 significance level.
Question 4
How many degrees of freedom are there?
2
3
4
4
5

Question 5
What is the critical value of chi-square?
9.210
11.345
13.277
15.086

Asystem of equations has 1 solution. if 4x-y=5 is one of the equations , which could be the other equation ?

Which of the following parabolas opens down?

The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %