Suppose a new study is interested in looking at the relationship between CD4 count and the presence of pneumonia in immune compromised patients with HIV. The following table represents the first 10 patients enrolled in their study.

Pneumonia (Y/N)

CD4 Count

Y

327

N

478

N

461

Y

301

N

467

Y

243

Y

286

N

378

N

346

N

478

A)What is the average CD4 count for those with and without pneumonia?

B)Imaginea stem-and-leaf plot representing the distribution of the CD4 count in all study participants and describe the plot with respect to its spread.

A) CD4 Count with pneumonia=289.25, CD4 without pneumonia=434.67

B)The spread is bimodal and roughly skewed left.

A) CD4 Count with pneumonia=344.56, CD4 without pneumonia=289.25

B)The spread is bimodal and roughly skewed right.

A) CD4 Count with pneumonia=211.52, CD4 without pneumonia=334.67

B)The spread is bimodal and roughlysymetrical.