A company that manufactures tires produce a tire that has a average life span of 65000 kilometers with a standard deviation of 5200 kilometers. The distribution of the life spans of the tire is normal. What percent of the last between 55,000 and 70,000 kilometers?

the answer is a i belaeve atleast thats what my calculator just gfave me

step-by-step explanation:

345

step-by-step explanation:

the function makes a strait line horizontally with no x intercept but a y intercept at 9.

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b