The lengths of a lawn mower part are approximately normally distributed with a given mean l = 4 in, and standard deviation
0 = 0.2 in. What percentage of the parts will have lengths between 3.8 in, and 4.2 in. ?
O 34%
O 68%
95%
О 99.7%

a

step-by-step explanation:

rurbrbrjrnrbjr

a = 3.14

b = 18

c = 18/5 or 3.6 or 3 3/5

step-by-step explanation:

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