Euler

Prove that the roots of the equation kx^2+(2k+4)x+8=0 are real for all values of k.

For each of the following ,state, giving your reasons ,whether it is is a qualitative ,discrete or continuous variable: a. type of fish b.test mark c.voting intention' representing the political party for which and individual intends to vote d.'approval r...

Qualitative, discrete or continuous variable and why, 'Voting intention representing the political party for which an individual intends to vote

Is percentage a continuous or discrete variable?

A fair 6-sided dice is thrown four times and the value Y, the number of times it falls with a 6 showing, is noted. Show the probability distribution of Y.

A newspaper reporter is sent out to interview 'a few people'about their views on the UK leaving the EU. State two ways in which the reporter's sample is different from a quota sample, and two ways in which is similar.

1. 2.5:1 or 5:2 2.using the ratio from part a 2.5:1 ....As it cost 15 in 1980 now you get a ratio x:15 2013 1980 2.5 : 1 x : 15 To get 15 we must times both sides by 15... so 15 x 2.5 is $37.5.

It can take any value right?

3.7