Factor with STEPS
x^3-x^2+2
4x^4-4x^3+x^2-4x-3

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is:

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle