A set of X and Y scores has SSX = 10, SSY = 36, and SP = 20 . The regression equation for these scores will have a slope constant of 2

Your uncle returns home after visiting a sleep clinic. He says the sleep specialists diagnosed him as suffering from narcolepsy. Which of the following sets of symptoms probably led to his decision to seek an evaluation at the sleep clinic?

a. loud snoring and violent leg movements during sleep b. early morning waking and an inability to get back to sleep c. irresistible sleep attacks and sudden loss of muscle tone for brief periods of time d. inability to breathe and sleep at the same time and difficulty getting to sleep

Tom, who is 20 years old, asks his brother, who is 50 years old, what percentage of his friends used condoms when they had sexual intercourse when they were Tom's age. Tom also asks his own friends about their frequency of condom use

If Tom's friends and Tom's brother's friends are typical for people of their generations, you should expect that Tom's friends are about ____ likely to use condoms during intercourse. a. half as b. equally c. 1.5 times as d. 3 times as