Question 3
here is the sample space for three tosses of a coin:
{h h h, h h t, h t h, h t t, t h h, t h t, t t h, t t t}
calculate the probability that all three coin tosses will give a tails result.

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33