Q3.i) Givenn = 6 , = 250, , = 5720,

Find the equation of the regression line.(5 Marks)

Q3ii) The heights in inches of commonly grown herbs are shown(5 Marks)

16 20 18 18 24 10 1512 20 35

19 14 20 18 24 18 16 16 208

a) Organize the data into a frequency distribution table with 6 classes

Q4i)Hospitals records indicated that cardiac patients stayed in the intensive care unit of the hospital for the following number of days.

Number of days stayed

Frequency

4

32

5

18

6

25

7

19

3

10

Find the probabilities :

a)A patient stayed exactly 7 days

b)A patient stayed almost 6 days

c)A patient stayed at least 5 days

Q4.ii) a) Write the sample space if three (3) coins are tossed at a time.

b) Find the probability of having at least 1 tail.