Question Help The weight of an organ in adult males has a bell-shaped distribution with a mean of 310 grams and a standard deviation of 45 grams. Use the empirical rule to
determine the following.
(a) About 68% of organs will be between what weights?
(b) What percentage of organs weighs between 175 grams and 445 grams?
(c) What percentage of organs weighs less than 175 grams or more than 445 grams?
(d) What percentage of organs weighs between 175 grams and 400 grams?
(a) and grams (Use ascending order.)
(b) (Type an integer or a decimal.)
(c) (Type an integer or a decimal.)
(d) (Type an integer or decimal rounded to two decimal places as needed.)

b and a

Step-by-step explanation:

the value of v.w= -12.

step-by-step explanation:

we are given three vector r,v and w as:

r = < 5, -5, -2> ; v = < 2, -8, -8> ; w = < -2, 6, -5>

we know that r,v and w could also be represented as:

r=5i-5j-2k

v=2i-8j-8k

and w= -2i+6j-5k

where i,j and k are the unit vectors of x,y and z-axis respectively.

also we know that it has the following property:

i.i=1 ; j.j=1; k.k=1

and i.=j.i=i.k=k.i=j.k=k.j=0

i.e. when we multiply two vectors or we find it's dot product we need to only multiply the components of x coordinates with each other; y with each other and z with each other.

hence, v.w= (2i-8j- -2i+6j-5k)

                  = 2×(-2)+(-8)×(6)+(-8)×(-5)

                  = -4-48+40

                  = -12

hence, v.w= -12