In other words, do students who come from lower ocioeconomic backgrounds perform lower, as we are led to believe? Or are there other variables responsible for the variance in writing performance? Again, a simple correlation analysis will help describe the
Mr. Dan Selig, president and CEO, would like to know the characteristics of his checking account customers. What is the balance of a typical customer? How many other bank services do the checking account customers use? Do the customers use
Suppose the amount of tar in cigarettes is described by a normal model with a mean of 3. 5 mg and a standard deviation of 0. 5 mg. a. What proportion of cigarettes have a tar content that exceeds 4.
Justify your response. (maximum 4 line response) (5 marks) From lying to sitting to standing, the resting HR is expected to increase, which the effect is shown in the subject (lying mean value = 69. 14 bpm, sitting mean value
A ‘bell curve’ is perfectly symmetrical with respect to a vertical line through its peak and is sometimes called a “Gauss curve” or a “normal curve”. The second shape a scatter diagram may have is anything but a normal curve